I wonder how much net gain a better keyboard gives you in terms of time spent getting it, extra money buying it, and time lost on the internet arguing about it, compared to whatever minor time you save from typing slightly faster or making slightly fewer errors.
I'm kidding though, I understand the appeal of having nicer things. But I suppose the reasoning above is why we aren't all typing on dvorak right now.
I think usually the draw of a nicer keyboard, if you do it right, is not in speed but in saving your hands from having serious problems down the road. Problems which could seriously end up costing you tens of thousands of dollars if you type for a living.
Actually that's a good point I haven't considered. Would the keyboard really make that much of a difference though? It's pretty much the same muscle movements with your hand in the same place.