The easiest thing for that sort of money would be to buy a Planar 3 and be done with it. However, a good secondhand Thorens or Systemdek would also be worth having. As would a secondhand P2 or P3. I'd discount the Technics SL2000 & the Pioneer decks as not being quite up to the mark of the others. A secondhand Technics SL-1200/1210 that hasn't been DJed to death is also a good purchase. Not too familiar with that particular Pro-Ject but I've had a couple of their decks and not been overly impressed. The Goldring Lenco GL 75/78 idler decks are well worth a look as well, especially if the arm has been changed.
If you're buying anything used, ensure it's been properly looked after and serviced. Try to find someone nearby who is experienced when going to look at secondhand decks as you don't want to buy a money pit. Assume any cartridge will need a new stylus.
Nottingham Analogue Spacedeck / Kuzma Stogi S / Benz Micro Ace S L
Lenco L-75 / Carl Ellis Plinth / Ortofon AS-212 / Ortofon SPU Classic GM E MkII
Ortofon ST-7 SUT / Nick G Modded Lentek Head Amp / Croft RIAA
Cambridge Audio CXU / Theta DS Pro Prime
Classé Model 30 / Luxman M-383
Usher Compass X-719
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