thanks for the replies.
i have read several reviews that say the hipers are fine, and i can not really afford any of the others that are the same approx wattage, as i am slightly over budget (£270 over) on the new system i am getting.
i was therefore trying to see if the trend was that a particular model was more prone to failure. i.e. if the people that had problems with them had the modular models.
its either that or use my old(20pin conector) thermaltake 460w psu that has 22a on the 12v rail, that has been powering my overclocked athlon xp system 24/7 for approx the last 3 year. thats only been turned off by a power cut or when i go on vacation once a year.