I sense a willingness to buy used, and have a custom plinth made. As such, I'd say look at either your afore-mentioned Garrard, or a Technics SP-10 MKII, or even better, MKIII. Albertporter (look him up here) sold his 40k Walker after buying a Technics. Mike Lavigne (mikel-here and at VA) compares his Technics (in a custom, two arm plinth) favorably to his Rockport, and also has a Garrard (also in a two arm plinth) for an upcoming comparison. I'd guess you could set up either of these for half your allotted budget-or, naturally, you could probably spend more.