Razer Abyssus or Lachesis.
I briefly owned the Copperhead, but it came with a slight defect from the factory (scroll wheel produced extra inputs occasionally), so I returned it and got a Lachesis which is a great mouse and significantly better than Copperhead.
However, I would buy Abyssus right now if I needed a new mouse. If Copperhead's shape was 90% perfect for my hand, Lachesis' shape is 85%; this is the only thing in which the Copperhead was better. I'm hoping Abyssus' shape might prove slightly better (for me!) than the Lachesis'.
Copperhead is very much a finger grip mouse which is very awkward to control any other way. The Lachesis has similarly awkward ergonomics but is very much more of a claw/palm mouse. Sure, the sensor is arguably better and the extra DPI buttons are great, but I would by no means recommend the Lachesis to a Copperhead owner who was completely thrilled with his Copperhead.
The Abyssus is definitely a better finger grip mouse but it is a bare essentials mouse with only 3 buttons. I highly recommend it for simplex games but extra buttons for games with a bit more depth to them can become very useful. For instance i use the side buttons on my Xai to correspond with switching to specific seats in vehicles in Bad Company 2 (
extremely useful for use in the Huey in Vietnam) and of course I have the DPI button setup to toggle to a more sensitive state for controlling the gun turrets and a lower sensitivity for when playing as infantry.
Logitech mx518 is one of the best gaming mice, if you want to stick with a laser and are a claw/fingertip grip then the G9x is also right up there with the mx518.
Look no further than the mx518. I have tried multiple mice and this is hands down the nicest in my opinion.
MX518 is just too archaic for me. The sensor has unavoidable prediction/drift control which will try and "help" you to draw straighter lines even if you don't want to.
That's the biggest flaw, the rest are minor but should have been improved upon long ago such as no official support for polling rate increase, you're stuck at 125Hz when all other "gaming" mice can do 500-1000Hz without clumsy 3rd party tweaks
The last gripe I have is that the mouse is still the same configuration from when it was the MX500 and its DPI buttons are still preset to be above and below the scroll wheel, which while that is certainly intuitive its far from ideal. At least it has DPI buttons, but I'd still much rather go for a mouse like the DeathAdder, Zowie EC1/EC2, or even the G500 long before the MX518.
LOL ignorance