This is the bias adjustment cheat-sheet that Onkyo provided with the TA-201. Very handy.
Interesting .. I have a Denon deck, and of all the listed tapes on the cheat-sheet that I've recorded on, the recommended positions for the bias fine control virtually match up with where I set the dial on my deck for those tapes (which I set by performing an A/B source/tape comparison whilst recording pink noise to the tape at -20dB, Dolby off, and gradually adjusting the bias til I found the sweet spot).
I'm sure the cheat-sheet will prove a handy little starting-point reference whenever I use any other tapes listed that I haven't already used