Microsoft Natural Keyboard Elite - Retail

I wish Microsoft would make a keyboard just like this, only update it to use a USB connector (without an adapter) and make it spill resistant. The Microsoft 4000 keyboard simply isn't as ergonomic as this. I'd like to see this black version made...

This was an impulsive purchase to replace my standard IBM keyboard after starting to feel pain in my wrists from RSS. I've owned this keyboard since it was first introduced several years ago and use it for everything. Between my job and personal...