Rich, for what it's worth I agree with a lot of what you've said.
I have never owned an S2K because I found it tiring to drive. It's a hugely capable car and as a track toy it'd be amazing. As a road car it wasn't the best solution for me. I'm into torque and prefer it to high revs, this is a personal thing. I loved the interior, low slung seat, high gearbox tunnel etc. It felt great to drive but VTEC (kicked in Yoooooooooooooooooooooooo) just isn't for me.
The Zed IS a lazy GT car. Sure, it's quick but it doesn't need to be nailed everywhere like an S2K. Completely different cars with completely different characters. They are comparable by price and layout but not by power delivery or character.
Best thing to do is to drive both and then decide.