I've been trying out the typing test at typingtest.com (I like this one because it doesn't FORCE you to go back and make corrections), and I'm finding that my speed and accuracy are better with the Dell AT101W than they are with the Cherry G80-3000. I like the Cherry, and I've been using it as my main keyboard for months, yet I'm a better typer on the Dell.
The Dell requires more force to press the keys than the Cherry does, but then I don't seem to bottom out as hard as I do on the Cherry, so perhaps overall fatigue levels out.
I really don't know which keyboard I prefer!