Honestly better off looking for a '060 accel vs a PPC one. Not much uses the extra grunt out of the PPC side.
Of course, having the PPC gives you the option of running OS4 on a machine, but that being said in the experiences I had with OS4 Classic on my old A1200 I wasn't impressed with it. OS4 is just far better on the NG platforms, even my lowly 440ep runs OS4 just stunning where as my old PPC A1200 never ran it acceptably in my own books.
