Beauty is in the eye of the beholder. I'm 45 and while I think 15" rims can look OK, it's just so much easier to get better performance from a 17" rim (not to mention fitting big disc brakes), I wouldn't consider going back in time. For the combination of price and functionality, I'm quite happy with the look of my 17" late model Mach 1 rims. Are there better looking ones? Maybe, but form follows function. The deep dish helps reduce the scrub radius. There is also diminishing returns going to an 18" rim, and IMO, they do look out of place.
I didn't build my car to win a people's choice award. I also don't take public opinion polls when I design parts. My suspension will hold it's own against anybody's out there. I designed my coil over front suspension/disc brakes/rack & pinion to take advantage of 17" wheels and modern tires. I'll pit my suspension design against anybody's: TCP, Unique Performance, Mustang's Plus... anyones. I'm not saying it will spank them, but it will hold it's own. A coil over design is so nicely balanced, you can have your cake and eat it too. It's got a full interior, and except for the wheels and seats, looks very stock, but it handles incredibly flat. I don't think the early design with all the tricks you can throw at it (roller spring perch, shelby drop, 600lb springs) are even a fair comparison. Now that's just my opinion, and I'm not saying that to offend anyone. If someone is close enough, and we can have a good natured contest, I would be willing to do a road test comparison... on your car!