http://www.esreality.com/wiki/Hardware:Mice_Sensors you should all check this post out. it lists mice by there sensors and you can figure out quite easily whats good and whats not by comparing new with old...
Logitech G9X - Avago ADNS-S9500 for example has the same sensor so the same feel as many other mice. some cost more some less.
Logitech G500 - Avago ADNS-S9500
Logitech G700 - Avago ADNS-S9500
Corsair Vengeance M60 - Avago ADNS-9500
Corsair Vengeance M90 - Avago ADNS-9500
Roccat Kone[+] - Avago ADNS-9500
Gigabyte M6980X - Avago ADNS-9500
Gigabyte M8000X - Avago ADNS-9500
Steelseries Sensei - Avago ADNS-A9500
now you see what some mice get better reviews than others. the reason being is they have pretty much the same hardware the reviewers are used to so they immediately feel more comfy using it.
all of thesse have basically the same sensor with slight variation of either increased sensitivity in the s version that they offer a tighter controll ofver the cpi which is always good... the a version concentrates on acceleration
most of the new better mice are using the avago 9800 which is a very smooth sensor. it does have a major flaw in that its cpi can only be adjusted in steps of 200 but if you know what your doing you can turn it up very high and then reduce the mouse speed to get a mouse that gives 2-4 cpi per pixel on screen. which results in a very smooth operating mouse.
i was sent a mouse by ANKER, they are new to gaming mice but will hit the market with a very decent offering that uses the avago 9800.
the anker precision laser gaming mouse. (yep quite a mouthfull) i have no idea of price yet because it doesn't go on sale till next week or the week after. but after a week of using it i can say its pretty decent. especially as its there first entry into gaming hardware.
8000 dpi 9 buttons. most of which are configurable...
it glides perfectly on high quality feet and the acceleration can be turned down to 0 which means it wont give negative acceleration (this is where most razer mice fall flat with there philips sensors)... as its 8000dpi prediction is near nonexistent if the mouse is set u correctly... and like i say its pretty good.
its more designed towards palm players who rest the hands on the mouse rather than claw grippers who use there fingers and is easily the match of Tt eSports Level 10M, Steelseries Sensei MLG, CM Storm Sentinel Advance2 or the logitech g600. (not that im a fan of mmo mice as i think they are gimmicks. but i include the g600 as it has the same sensor)
lets see how much they want to sell it for as all the above are about 50-70 pounds mark... i hope they decide to bring it to market a little cheaper as they are new and need the word of mouth a good mouse can offer.
so good luck Anker... a very good step into gaming grade mice.