Heaven forbid I should have an opinion, eh? The OP asked for some, I gave him mine.
No, I've never driven a modified 370Z. Yes, I'm sure there's plenty you can do to it. No, I still think the 370 interior is a design mess, and the quality of the switchgear not what it should be for a £30K car.
Given that a sizeable amount of 370 owners say they bought it because it's not a common sight, I don't see that as an unfair comment. The engine is routinely noted as not sounding special by owners themselves, the ride isn't as good as it should be, it's not as quick as the 987CS nor the TTRS, and neither does it handle as well. Are you seriously going to argue those points?!
Last time I looked Colin you were driving a £40K car, and I'm in a £6.5K one. If you want to throw the money argument around, then try looking a bit closer to home, eh?
Besides, we're talking about cars that cost the same here. The Germans will be older and leggier, but the price will be the same.
Truth is no, I don't rate the 370 very much. The outside looks stunning, I don't like the mix of analogue and digital inside, and I don't think it's very exciting to drive for the money. So what? Everyone thinks the 6er is an ugly car, the 911 looks like a Beetle, the VX220 is a poor man's Lotus, and the MR2 a hairdresser's car. And you know what, they're right. Given I already said to the OP that it was the right car for him, I'm not sure what else you expect me to do. Lie? Tell everyone I think that the 370 is the best car in the history of the world, faster than a P1, nicer inside than an F-type, better steering than an Elise?
Or just maybe I can offer a different viewpoint for a fellow enthusiast.