I bought a Rosewill RK-9000 right after the original Das died, because I couldn't go back to the generic rubber dome spare I had in the closet. I was going to keep the RK as a spare, but I figure if I don't get used to this in the next few days I'll switch back and keep the Das as a spare. The space bar thing is not as jarring as I previously thought, and it isn't interfering with my typing, so I may stick with it after all.