There's a new generation Philips laser doppler sensor on the market. Seems to be as accurate as the Twin Eye but with none of the problems.
First mouse to use it is the Mad Catz RAT TE (Tournament Edition). Getting good reviews so far.
I thought the first one to use that new Philips sensor was the
Razer Naga 2014 (although the DPI seems to indicate so, it does not uses the AVAGO S9818), since its characteristics don't seem to resemble the older versions (or maybe it's just a modification of the PTE PLN 2033, which was already an improvement over the craptastic PLN 2031 and PLN 2032).
Also, what seems even more interesting, is that
Mad Catz finally improved the internal build of their mice, removing the Zhij crap and using proper OMRON switches (although its the cheapest model, lol):
http://www.4gamer.net/games/097/G009735/20140330001/Still, its price is pretty much retarded, as has always been.