With a clean slate but with today's experience, I'd have a Thorens TD150mk2 or AR XB1 with original arm, sort the bearing thrust pad in the Thorens case at least, as I believe most are worn out now (a 1mm ptfe disc eased into the bearing well 'sorted' my TD160 which has a more resonant pressed sub-chassis which sadly has a subjective effect (I'm drifting again)). I'd fit an AT540 or previous 740 (new versions have fixings from above) and maybe a rubbery mat change to taste and sit back and enjoy the thing, albeit with regular belt changes and a platter push to aid starting. The Technics I mentioned is superb too along with a select few others from the mid 70s, but there's something of an 'interaction' with the suspended designs I still like which is nothing whatever to do with 'sound quality.'
The Planar 2 and 3 had plinth differences I recall, as well as the 3 having a thicker therefore heavier glass platter. The mats used to be two thicknesses as well at one time, a thicker felt/wool on the 2 to go with the thinner glass. At the time of my thick-plinth (with edge chamfer) 3-2000 sample, the 2-2000 had an MDF platter with silver painted on the slightly chamfered edge ('aluminised' apparently

). This latter didn't last long and again, *modern* Regas are rather better finished than before and the tonearms better than ever in the fine details
I say the hobby has all but left me and here I am, banging on about turntables which are the ultimate 'hobby-art' of music reproduction I think. I do apologise to all for thread drift and needless stuff that may or may not apply to thread topics.