MR2 AW11, they are cheap (just watch out for rust), an extreamly reliable engine, and parts are cheap. They are no more dangerous than a Ferio, it's just these last long enough to really push the limits. You can get nice ones for under 2k and Supercharged ones for 3K and up. Tuning and upgrades are out there as well. Great MPG, but lacking rear seats.
MR2 SW20, a good car, but I wouldn't get it unless it's a Turbo model, which is hard to find period let alone stock. Most likely out of price range, but if you find it get one. Same general positives and negatives as the AW11. The NA has decent MPG and the Turbo does alright.
MK3 Supra, you can find a good one for under 2K. Because of improper torque specs many have blown head gaskets. It's an easy fix, and doesn't really hurt much at all. It just lowers the price Me and my brother in law put 3K into the motor (got the car for a grand, did all the installs ourselves) and ended up with a very fun car. NA with 250HP, 280ish torque, with (stock) short gears equals great fun for 4K. They are becoming rare, but are a tuner favorite, so if your going to get one, now's the time. You can find nice Turbos form 4k-5k, be it a 7M-GTE or 1JZ-GTE. Easy power to be made in the turbo models.
I know it's all Toyota's but they are what I know.