I read about Single Rail PSU's by accident, being unaware of the spin about Multi Rail PSU's it made me think about my next PSU when I upgraded a couple of months ago, hence the reason I settled for the PC Power & Cooling PSU as it's one of the few Single Rail PSU's around and got good reviews on nearly all the review sites that had reviewed it, "Overall it's a KICK ASS PRODUCT" as one reviewer says, some relation to Delboy I think
I did check out the Silverstone Decathlon 750w, again Single Rail, but a few reviews and forums mentioned they whine when under load so didn't fancy that, having a wife or girfriend doing the same whining when they are under load is more than enough!
I just hope your new PSU doesn't give you any more trouble!