Re: Classic II vs. SE/30. The SE/30 is faster. Not just a little bit faster; much faster. The Classic II crippled the bus; unforgivable, to my taste. Add to that the fact that the FPU is built-in (don't have to hunt for a rare and expensive add-on card), and the amazing 128MB ram ceiling, the SE/30 stands head and shoulders (er, crt and disk drives?) above the Classic II.
The SE/30 remains a quite usable Mac -- it can surf ok, it supports CD burners, and has that terrific form factor. Love it, love it, love it.
But yes, I still have a great fondness for the Plus. Although it can't do nearly as many things as its far more capable younger brother, it has a certain retro charm that is difficult to resist.