I'v got both Logitech G5 and Razer Diamondback, each on SteelPad 5L...G5 is more comfortable but a little heavier, Razer is more precise and config allows for more. Also Razers gliders give more freedom, just push it slightly and it goes to the opposite side of the pad

BUT it's difficult to learn how to hold it - no support for Your thumb, it just lies on pad.Razer is also very flat in comparision to the others, must get used to it.
After few days with Razer, I prefer it despite that I'v been using G5 for more than a year.
aaahh...one more thing...Razers buttons are very sensitive! Be cautious of accidental clicks!
End

PS. Logitech MX 518 sucs...got this one too
