"The Xai is in every way equal to the SteelSeries Ikari - the hands-down best gaming mouse of all time that received a whooping 97% in October 2008 - except for one thing: It's ambidextrous, with two thumb buttons on each side."
"That, as a right-hander, I much prefer the contours of the Ikari is rather predictable, but doesn't diminish the Xai's internal hardware, including a laser that picks up more megapixels than my camera and boasts SteelSeries' peerless tracking."
"... the SteelSeries Xai is quite simply the best pure gaming mouse we've ever tested."
"Rather than tack on gimmicks like flashing lights and weight systems, SteelSeries has simply taken the basics of a performance mouse and honed them to perfection. Despite being ambidextrous it's incredibly comfortable, tracking is exceptional, and the level of customisation on offer puts other mice to shame."
"In terms of ergonomics, the Xai is fantastic. All told it is the most comfortable mouse I have used and fits both left and right hands perfectly. [...]"
"All told, the SteelSeries Xai is the most impressive gaming mouse I have ever tested in our labs."
"SteelSeries has definitely pulled it off again. The Xai laser mouse manages to not only compete, but beat many of the seemingly better equipped mice from rivaling brands."
"The simple design approach from the Ikari has been taken one step further and the two mice SteelSeries are currently marketing both feature an ambidextrous design which got to make them one of the top picks among left handed gamers."
"SteelSeries go on about how they design tools for esports and the Xai is a prime example. [...]"
"This is a stunning mouse that any hardcore gamer should want."
"The mouse feels very smooth in contact with the hand and its very easy to set the DPI you desire right away by using the software application or the LCD screen. The extra buttons are very well placed and I did not meet situations where I would press them by mistake."
"The Xai is a great general purpose gaming mouse and incorporates a few great innovations which will change the way mice are designed in the future."
"At the end of the day, the Razer Mamba may be one of the prettiest gaming mice on the market, but Xai, the new mouse on the block, is a bully and is determined to eat Mamba's cheese for lunch."
"Overall I think Xai's advantages outweigh its few disadvantages, and I strongly recommend it as a lethal weapon for competitive PC gamers that are looking for every possible advantage on the battlefield."
"Like virtually all SteelSeries products, the Xai gaming mouse is an unassuming powerhouse that packs a lot of features under the hood and some unique features to put it ahead of its peers. [...]"
"The Xai is everything a good gaming mouse should be: exact, smooth, comfortable, and almost ridiculously customizable. The Xai moves and feels good under your hand and glides flawlessly and accurately."
Score: 5 stars
"I like the Xai. It's compact, elegant, unpretentious, and effective. While I personally prefer a wireless, right-handed device, I found the straightforward design of the Xai refreshing, and of course its performance is beyond reproach."
"The form factor is so good it feels almost like an ergonomic mouse."
"If you want a gaming mouse you can use with either hand, I'd say you can't do better than Xai [...]"
"Using just the LCD and the mouse scroll wheel, you can actually change the settings of the mouse on the fly without using its application. This is a new addition to SteelSeries mouse products and I'm sure it will make lots of vendors jealous."
"If you have the money and you are looking for a great gaming mouse, pick up the Xai. Even when I find the Ikari more comfortable with its unique contour design, Xai is technologically more advanced than the Ikari, a greater CPI, and the ability to change the mouse settings without any software."
Designed to give players a competitive advantage, the SteelSeries Xai Laser Mouse R.U.S.E. Edition enhances performance with its superior technology and a preconfigured profile setting that optimizes game-play. The preloaded R.U.S.E. profile, created with input from Ubisoft®, allows quick access to the R.U.S.E. and HQ Menus, and preset macro buttons can take the player from the bird’s eye view of the war to the heart of the battlefield in an instant. The mouse also offers gamers the ability to play like the pros and download setting profiles created from some of the world’s top professional gamers.
Part of the research period and sample testing for the Xai and Kinzu mice, with SK Gaming among other teams, was spent at Inferno Online Sweden.
“Above all, the shape of my mouse is key. I was at a point certain that I’d found MY shape – and then this thing reset me for the better.” - Christoffer ‘GeT_RiGhT’ Alesund
Having spent less than 14 days adapting to initial prototypes the SteelSeries Xai and Kinzu, Team Fnatic and went on to win their first grand slam tournament, using these mice.
A total 100 golden-themed SteelSeries Xai mice were created in 2009 as part of promotional campaigns in select countries across the globe.
SK Gaming’s World of Warcraft Sansibar PvP team uses Xai in the EM IV European Championship Grand Finals, to take home gold medals and $7,500.
“The driverless feature ensures a quick setup at events and tournaments, and gives me an identical experience compared to when training – no matter where I’m at.” – Dennis “Walle” Wallenberg
The first custom, limited edition SteelSeries Xai available for purchase, was created for UbiSoft®’s R.U.S.E., and features pre-loaded and pro-gamer recommended mouse profiles.
Fnatic’s Call of Duty team captain, and “Player of the Year 2009″, Stevy “Stevy” Verhein swears to the Xai. Through 2009, he also led his team to be voted “Team of the Year”.