LOL. Two tables each with some big things going for and against them. Very different schools/camps, so you’ll get very polar responses. I guess if it were me starting over and choosing between this pair, I’d give the Prime Signature a shot - but only in the wood finish (it’s honestly gorgeous), and after replacing the unipivot with whatever their best gimbal arm currently is. Ring clamp would be a great add-on, too - who doesn’t want the ability to perfectly flatten warped vinyl? Then I’d brace myself for the Mk 2, 3, 4, 5, ... N versions to roll through over the next few years.
Either one should be a really nice setup, with caveats.