We've had a gen 1, 2 and currently have a 3 (2008) All bought at about 60-80k
Gen 1 was an import, no troubles, still going well with it's current owner. Only gripes were the gearbox software (basic in the extreme, going up steep hill won't change down, then you kickdown and it tries to rev to 10,000), and I had problems with the drivers seat not providing enough side support
Gen 2 was an NZ new Sport. Had a diff whine when we got it (fixed under warranty) then developed a noisy 3rd gear. I think a problem with gear hardening. Better gearchange though, but still a 4 speeder. If you're going to offroad it look underneath at the frame around the fuel tank - it's low!
Gen 3 is the best so far (NZ new Sport again). Stiff suspension - you can throw it around, but not like an E36!, 5 speed auto box. But the one thing the boss hates is the lack of space between the seats for a handbag.
No real problems with any of them, except the Gen 2. My impression was that that model had gone soft after the previous one. I really like our current one - great car for touring in.
PS a 2.4 metre long piece of 100 x 50 almost fits diagonally across the car in a Gen 2. Until you close the rear door, when it tries to escape through the windscreen.....