Share 'Trackmaster, Voicemaster or Voicemaster Pro?'

Does increased cost mean big jump in quality? Would be used for vocals in a project studio. Also have 3060 (with gates) which I think could be patched in to control studio noise Can't find a download for manual for Original Voicemaster (Would need to be 2nd user - I am watching one (£120) and I know that VMPro (£340ish) and Trackmaster (£180-ish) seem to get rave reviews. I haven't used either ...