I have a P-1 and am pretty happy with it. My gripe is that I'm not sure how road worthy they would be, they feel a bit cheaply put together (don't use planet waves cables with them, as they pull part of the socket surround off!)
For home use I'm really happy with mine though, for £80 it does a pretty convincing 5150 impression and has nice and usable tone/gain controls. Quiet, too.