Well I own a 2+2 and talk heaps with a guy who has a 2 seater. Rips mine off for being a family car. Personally I say each to their own. Bodyweight isn't that much more, and you get more cabin space. (god knows how you fit anyone big then little kids or cute small little teenagers in the back seat. Plus fold front seats down and I can sleep in my car stretched out (when drunk unexpectedly and in town.). Thats extra foot of length makes a big difference. I sat mine next to one of his and I prefer the longer body of the 2+2. Personal choice, and I'm not sure what you mean by hump in the roof cause it just doesn't slop down as aggressively as the coupe. That aside, I take my 2+2 on some highspeed runs (hill climbs, night runs through twisty areas etc) and at the moment its stock down to even original sized tyres (in the handling department), and I managed to keep it up with a more experienced driver using a MX5. Besides if your like me, the 2+2 is becoming a 2 seater, back seat going, building a chest that looks like the back seats folded down to put in the spot for storage and so the back is kept clear and flat still, auto is being pissed off for a manual (sitting in shed as I type) etc.