I've had mine for about two years. No issues thus far. Hear some build quality complaints on forums- its hit and miss. Its a hand built car that costs $25-40k.
The good: Closest thing to a race car for the price, Toyota engine/transmission, so much fun to drive above 5500 rpms.
The bad: Getting in and out with top on, people looking at you- wanting to take photos, etc, not many creature comforts.
Long story short: If you want a smooth ride, a great stereo, isolation from the road, and a long trip cruiser...buy something else. If you want to enjoy every mile, drive a roller coaster, rip through the gears, wind it up to 9k, turn the stereo off and listen to the engine, buy an Elise.
Best Features
Engine flexibility.
Around town feels like a corolla, when you want/need the power, its there.
If you've driven an Evo or WRX...the torque is maddening at times.
Beware! I bought mine brand new and only put on 2200 miles per year. When the car was one week old the headlight flew out. The radiator hoses have blown 3 times stranding me on the side of the road. The build quality is terrible. Good luck going up-market lotus! People paying six figures for a car will not tolerate these issues.