They are worth a look at for that price, as you said the earlier models(phase 1 metal rocker cover) had a weaker bottem end but if its had the oil changed like it should have and a few services then it should be ok. Can get new engines for £250-300. I sold my X plate one to younger brother 2 years ago....107K on the clock and no cambelt change, still going strong, no knocks or squeeks and regularly tracked.

I would have another one tomorrow if I could.