Don't get the piperock though. Google youtube for videos of the highpitched squel some faulty ones do under load.
Google newegg and look at the buyers reviews to see how many failed within the first year of ownership.
And lastly although Tagan advertise three years warranty it is only first year parts and labour and years 2 and 3 are parts only. Chances are in years 2 and 3, if it failed, with the cost of postage and labour, you would be more likely to just put the money to a new one.
I think its appauling that a not cheap, high end psu can be sold with what is really a one year warranty when some psu makers offer 5 years.
Stick with corsair IMO.