I don't know if any of the tape sims are any good, so I can't help you there, but a lot of guys will either track to tape and then dump it to pc, or use tape essentially as an effect by tracking to pc, then sending it out to tape and recording it back in. Still others just use the electronics of a tape deck, but then I think you'd be losing a lot of the desired result. On the other hand, some big time guys do it, so what do I know.
I think tape generally has 4 desirable characteristics. One is saturation, aka 'warmth' aka distortion, albeit a pleasing one. One is compression, which is almost required for bass, and is the thing that gets talked about most in regards to tape . Another is limiting, also very helpful for bass, as well as a major reason drummers like it. But the one I think people forget about is the sort of 'rounding off' of the high frequencies, which tends to make things sound 'smooth'. So you might try dialing back on the highs just a hair.
Just trying to keep the discussion going, really.
How ARE the tape sims, guys?