[lordsmurf]

I only use Sound Forge for converting tapes and records. It's good for restoring, fixing and filtering audio, too!

Honestly, the audio card is more important than the software. Pro software with a crap audio cards yields crappy audio. If your audio card is part of your motherboard, for example, you're not getting the most out of your tapes/vinyls. Dedicated audio cards tend to work better, with much better SNR. It doesn't have to be expensive either, any decent $25-75 range SoundBlaster or Turtle Beach card is great.

EDIT: I see you're in UK, so here some UK links: Sound Forge and SoundBlaster