Hi willie,
I'm probably not telling you anything you havent thought of yourself, but I would suggest seeking out or even better trying some vintage models in the flesh. Different designs all have their own feel to their operation. I am probably not explaining this very well, but for example when I tried a Linn LP12, i just didnt like the feel of using it, with the wobbly platter and the feather light arm. It all felt so imprecise (though it made nice music!). And for different reasons I am not a fan of the lightweight Regas. Nothing wrong with either decks of course, just a personal preference. Whereas I love the positive mechanical feel of a Garrard.
Of course none of this equates to quality of sound, but a vintage deck is more a heart than head decision. So if you find a TT you really enjoy using and owning, you will be more inclined to stick with it during the initial and inevitable fettling phase. I have forgiven foibles in my 401 that I wouldnt be so accepting of if I didnt like it so much! It is a bit like a classic car, your mindset tends to be different. So given that it is as old as I am, I tend to think it is a minor miracle it works at all!
And of course with a vintage model, condition is everything so if you have a more than one possible deck in your search lights you can wait until a good example from your list pops up.
I have thought of one possible alternative. Have you considered the Inspire idler deck (a rebuilt lenco). They sound brilliant and price-wise are about your budget. It could be the best of both worlds - a vintage deck without the heartache.
See
http://www.hifiwigwam.com/showthread.php?75032-Inspire-Hi-Fi-s-new-Idler-Drive-Turntable-Launching-at-the-Whittlebury-Hall-Show!
Another option is an old Thorens. Inspire service, rebuild and replinth some of their models and they look lovely. Prices are well within your budget too.
You could even come along to the Whittlebury show and check them out - I assume Inspire will be exhibiting again. It would make a nice weekend away across the pond.
All the best,
Graham.