I know, there are dozens of threads to this extent all over the place, but I have a very specific need. I want my mouse to have at least one or two buttons which can be set as modifier keys. (Another alt, shift, ctrl, etc). I am currently using a razor lachesis. I'd VASTLY prefer the mouse be wired. I am often on my computer for 12 hours straight on some work days and I'd rather not being going through 6 bucks in double a's a week. If it's not wired, it needs to be rechargeable at very least. My biggest priority however is being able to use one of the mouse buttons as a modifier.