I used to use a IIb to power the StudPre. It's basically the same power amp as a IIC+. IMO, a 60 watt IIb with a couple of Sylvania STR-415's (or if you can't get ahold of them, some SED Winged C's STR 454 are a close 2nd) is one of the sweetest tones there is.
Plus, having a IIb would be nice-...