Not voting in the poll because I've not really been paying massive amounts of attention. However, my poor old Rev. A PB12" has been slowly dying on me over the past couple of months after just over five years of loyal daily service (oo-er!!). The backlight doesn't always fire up when I open the screen and the hard disk is making a few nasty clicking sounds ever so often (yeah, I'm SuperDupering every other day right now).
So I think it's time I jumped in and replaced it, and the low-end MBP is the replacement I'm going to go for. The L2 cache thing doesn't bother me, just as the slower FSB on the PB didn't when it came out. I don't see why so many are ready to jump off high buildings over it. If you've been waiting the update is still better than the machines they were selling yesterday.
So if you need a new machine go for it.