I'd take a Rega any day over a Pro-Ject table. I have a P3-24 right now and enjoy it While audio memory is something that's a bit hard to rely on, I think the Planar 3 with RB300 sounded a bit better than the newer package.
With Rega, buying used is a decent way to go. Just insist on original packaging. It's smartly done and should survive pretty much anything. Just off the top of my head, I've shipped and received probably 10 times total without any problems. Even if something were to go wrong, replacement parts are very easy to get your hands on and they are reasonably priced.