I thought Corsair learned from their mistake?

They are just about to relase the m65 rgb here which I have been waiting for, seen here: http://www.pccasegear.com/index.php?main_page=product_info&cPath=258_697_1303&products_id=29180 What is the difference exactly? I don't want to upgrade and find out I could have had a better mouse for $10 more or something but what is better about this mouse?

I just starting tested the M65 RGB for a review. I don't have anything with programmable LEDs on a mouse or anything, but overall this might be the best mouse I have ever tested.

Nah I like the look and feel of my Logitech g602 wireless gaming mouse.

The M65 has positive acceleration built-in that you cant remove, so you might have problem with accuracy. This mouse is either using the razer S3988 or 3310 (with modified srom to reach hardware limit of 6400dpi), they are both known to be very good sensors. The M40 uses the 3090 sensor which is also known to be good with minimal flaws. If the sensors are implimented very well, this new mouse should be the most accurate of all 3 (if you avoid the laser sensor and buy the optical one), the M40 being second. They need to stop using those laser sensors and let them die already. New laser sensors without acceleration would be awesome.

I just starting tested the M65 RGB for a review. I don't have anything with programmable LEDs on a mouse or anything, but overall this might be the best mouse I have ever tested.

did you ever do review on the g502? anyway these day mouse all look the same there even starting to have similar button lays, then again there are only so many places to place buttons.