In my experience, they’ve gotten faster and leaner over the years... but an original Planar 3 and indeed the P3 2000 is a lovely thing. They’re just so well presented, form follows function beautifully... and they all function really rather well, and will continue to do so indefinitely.
I kind of wish I still had an original Planar 3 here. I currently have a tricked out P5 and an RP1. What Rega have achieved over the years is an ever increasingly good performance an a lower price point, to the point where I’d have no hesitation about sticking an RP1 in front of some much more expensive electronics and speakers... mine is currently fitted with an Ortofon 2M blue, into a Linn Majik, LK100 and Royd Sappires... the cartridge, followed by the phono stage are the weakest links in that system.