If you are forced to do this on a less than stellar machine.....
Keep in mind that heads can be aligned (azimuth) with a small screwdriver. Ideally you'll do this on every tape anyway to get as much HF energy out as possible. You don't need record bias on playback.
IMHO the issues will be mechanical quality of machine and tape path, build of pb head (width of the air gap f.ex affects high frequency pickup), playback electronics. And pb level adjustment if you must involve the Dolby decoder to get what you want...
I think you'd get good results on some of the better units from Denon, Sony and Tascam (units I know. I am sure there are others are in the same league).