Pro's

1 - Ambidextrous (much easier to control small movements as the mouse is smaller)

2 - On mouse profiles (the LCD is actually more useful than you would think, now i really don't need to install drivers on LAN to check if my DA was doing it's job

3 - Perfect tracking on all surfaces, each with only 1cd lift-off (qpad ct, razer goliathus speed/control, steelseries qck heavy), zero skipping.

4 - Although useless, all the stuff i turned off is nice to be displayed in the drivers i.e. prediction and if accel disable worked.. that too. Bringing me to my first con..



Con's

1 - Accel (which is funny because steelseries say this in their drivers:

(1a) Some games and applications have you working on a huge 2D mousing environment with resolution of 1900x1200 (or even higher), not to mention multi-screen setups. In these specific cases you can either configure the SteelSeries Xai to operate with very high CPI values or you can utilize hardware acceleration. With acceleration you can bridge large distances quickly, while still being able to work flawlessly in small
areas of the screen, without having to switch your CPI with the CPI toggle all the time. The main difference between this setting and Windows acceleration is that this setting is running in
the hardware. Not only are you able to turn it on and off, you are also able to set the degree of dynamic acceleration that is applied.

Recommended use: Most gamers will probably find that a setting in the lower region should be more than enough, but if you’re a real speed freak you can turn it up high. For FPS gamers and games with a 3D mousing environment we recommend not using acceleration.


(1b)Leaving the Windows Pointer Speed at the default 6th notch (middle setting) is highly recommended, since setting it to anything else will add a fixed amount of acceleration to your pointer movements, which will reduce your precision and accuracy with any input device - including SteelSeries Xai. We introduced SteelSeries ExactSens to free people from this and all other software interpolation, enabling you to operate with true hardware based sensitivity settings for maximum precision and accuracy. We repeat, we highly recommend you leave this setting at the default 6th notch.)

So SS... Why can't i turn it off ffs?! I do both of those and i'm not an idiot. 5-10percent Accel is not nice, especially when it's unexpected so why lie to me? Have i just paid £47 for something that you have lied about.. or rather.. made your preference over but not actually gone through with meeting your own research needs?! Or are you clever by trying to do a razer and am i going to see Xai v2 next week?

2 - I occasionally touch the right side buttons with my little fingers - no problem though as they are unbound.

Conclusion

If they fix the accel i'd use the mouse, i could get used to the shape if it was consistant movement as although not identical to the Microsoft WMO, i still like it. But after using a deathadder for over 2 years now.. i have to say.. they really did get it perfect with 1800dpi and the 1.28 NDC no prediction fix.

As i LAN quite alot, i love the profile setup and LCD... but if you advertise that as a feature, i expect NO ACCEL to actually work. Sort it, or atleast make a statement before you lose a customer in the next 10 days as i RMA it.