The reason the Apollo boards are so finickerty is the timings have to absolutely spot on & what affects these factors are just down to the Mobo revision. EAB is a good place to get modification information accordingly & one of the best chaps to talk to is Zetr0. You can also get hold of him over @ AmiBay.
I had an Apollo 1240 which was converted to an 060 & it ran perfectly on my Rev 1D4 motherboard with 3.1ROMS & Mediator. Get the required mods done to your board or find a 1D4 & you should be good to go.
With regard to Blizzards being slower than the Apollo, if you have a Blizzard board with SCSI, it floors an Apollo overall.
Best Wishes,
Kin
