Prettry much anything NOT Intel I like, well the 486's @ 100Mhz (and some other X series ones) were pretty good and robust from my experiance.
Mostly I like the... Z80, a real classic processor that really brought the British computing industry to our homes.
All the 680#0 Moto ones (Especially the ceramic ones), for much of the same reasons as above execpt the world.

Socket A Athlon AMD's and the latest AMD Quads (well the good ones anyway).
Also liked some of the RISC ARM and StrongARM CPU's in the Acorn's for their relability.
Wasn't keen on the 68010's though, almost totally pointless especially in the Amiga world.