I bought one brand new in November and absolutely love it. I bought it from Paul in Bluebell Motors and it was €2K cheaper than the nearest competitor Liffey Valley Peugeot for the exact same car. Lovely car, got the alloys, spoiler, colured trims, the whole shebang. Very comfortable to drive and great driving position. Early days, but I am very pleased with it. Do not do much driving, about 6,000 mls per year. Probably a woman thing to do but I normally keep them for about 2-3 years and then get rid of them before the NCT comes.
I traded in my O2 Seat Ibiza and got a great trade in. Before that I had a 99D Peugeot 206 and never had any problems with that either, although I did not think the seats had great support. Bluebell Motors were great to deal with from a service point of view as well.
I think it could just be down to certain cars being lemons. My partner has a 03D Golf TDi and this has not started for him twice, leaving him stranded in town.