I daily drive my E Stock '91 MR2. I love it. More practical than you would think. The trunk isn't big, but it's small either, really. I can totally go get groceries and stuff.
I get about 25 MPG around town. Could do a lot better if I could drive more reasonably. I've come close to 30 mostly city driving when I take it easy.
Hard tops are pretty hard to come by, but they show up from time to time. The really hard one to find is a '93 Hardtop. That's the year all the autocrossers want. Has the revised syspension but doesn't yet have a passenger side air bag. Personally, I think a '94 would be just as good, and my '91 with T Tops could be 98% as good with a better driver and some allignment tweaks. But you didn't ask about that...
No real problem areas. Seems like the 5S doesn't hold up as well as some Toyota engines. I've seen a lot of them go at about 150,000 miles. If you run a big front bar and race rubber for a while it will rip out the sway bar mounting points on the chassis. Worth taking a look at. Other than that, it's just hard to find a clean one that hasn't been beat to death by a kid or "modded" into something horrible. Ball joints usually need to be replaced. They sorta go through them, but not at an unreasonable rate. E Brake cables are almost always worn out. They get moisture in them and if you live in a coldish climate, the brake will freeze on overnight and you aren't going anywhere. They're not hard to change or very expensive.
I agree with folks who say they aren't the most nimble cars ever. They feel big and heavy, especially with manual steering. Kind of the opposite of a Miata. But man, do they ever hold on. Really fun to feel all those Gs. They're faster than Miatas. They'll stomp them at a ProSolo. On a typical course, they're faster in the sweepers and straights, slower on the transitions. Miatas are king of the slalom.
It's very hard to work on the engine. Timing belt is such a bear that I pay someone to do it. Other than that, pretty much normal stuff. Valve stem seals leak on cars with some miles on them. Got to keep the oil topped up or there is terrible valve chatter on cold start.
My car in race trim weighs right around 2,500 lbs. Seems heavy for such a small car. Not sure why they weigh so much. They say the T Tops cost you 20 lbs.
Sorry for the long post. Just rattling off everything I can think of. I love my MR2.
A pic of mine in action at the Colorado Tour event.
http://action.zenfolio.com/p1014973075/e5884977