Which one do I buy Pre Ject Debut III or Rega P1??

fwiw, I had a couple of Pro-jects including an Xpression 2 and a the nice Technics with the better wiring (forget the model number). None of these really did it for me. I heard a P1 at a dealer and now I have a Rega table on the way. You'll know if you're a Rega person or not when you hear it. At this price point, there are pros and cons of build quality for all the various mnf's so you can't really pick the best one for you based on that. If you can hear a P1, do so. If not, buy one from somewhere with a return policy. In short, another vote for Rega. Good luck.

Ive had a Debut III for several years, for Christmas I gave myself an 'upgrade', Rega p1. what a piece of junk. I listened for a week, and went back to ProJect. I cant comment on the Rega's sound, since it never got broken in. But the Rega build quality is really crappy. Dust cover hinges are flimsy and there is no ground wire. Anyone have a comment? 

Rega P1 tonearm is quite cheesy.  I had a Music Hall with a 9" aluminum Project arm and it was nice though nothing special.  I had a Rega P2 once and really did not care for the build quality.  Arm was ok but everything else was sub-standard.  Switching to nice vintage Japanese decks was a huge improvement.  Think Technics 1200 1301/1401, Pioneer Pl-600, JVC QL-5/7 or the like. Check out Cryoparts for vintage upgraded decks.   

If I had to pick between the 3 you mentioned initially, I would pick Music Hall 2.2.