I'd like to cast my vote for the Razer Naga as well, it's awesome and I couldn't picture myself playing without one.

I just want to point out that you don't need to be able to reach or use all 12 side buttons for it to be useful. I myself am only using the two first rows (1-6) plus 8 as those are the ones I can comfortably reach with any sort of precision. That's still 4-5 more buttons available than a regular mouse.

If you're keen on a regular mouse I can recommend the Logitech G500, if it's still available. It's a modern MX518 with better button placement.