Interesting that you mention the ride quality. This is hardly ever mentioned when people talk about the differences between LR and P, apart from a cursory ''you get lowered suspension with the M3P'' and ''the 20'' wheels are too crashy''. I test drove the LR AWD then a week later a Performance and LR back to back - I actually found the ride in the P
less crashy - sure it was firmer and in that regard less comfortable, but it felt better controlled, and for me gave a better ride quality. Maybe it's due to the lowered suspension, maybe all psychological, but it convinced me to go for the P. If I hadn't been worried about invalidating the warranty I might have gone for the LR and bought the boost and some coilovers. Had my P for 8 days now and very happy - and yes, after years of owning the next best MX5 power wise the nagging ''should have gone for more power'' voice was also a consideration - only problem now is I have the (admittedly fairly quiet) ''should have gone for the one where I got a tow bar'' voice.