> how large is the palm rest in front of the keys, on your model?
I'd guess it's about the same size as the palm rest on my T410 Thinkpad laptop. Certainly it's bigger than the non-existent palm rest on most keyboards, but I've never found it an issue.
Thanks. I've poked at a 420 in the store, and it seemed while the palm rest was about at the limit of what I could tolerate, in size, that it might work for me.