Don't many of the Megane's of that era suffer some kind of major electrical malfunction that costs LOL money to fix?If you've got £6k and looking at 10yr old hot hatches have you not considered what was regarded as the best of that period, the Megane R26 F1? Great chassis, 230bhp, LSD, Brembo 4 pots, Recaros.
I remember reading up on nearly every hot hatch available before buying my ST trawling Forums etc and always wondered why the Megane 225's were cheap compared to the others then I went on the Renault Sport forums and seen people getting 1k bills for electronic faults that you don't normally hear of on most cars that aren't French