I have had several Antec PSUs, one old SP 300W, and TP 330W, 430W, and now running a TPII 550W. No issues with any of them. Parent's PC is running on a pretty old Antec SP 350W that other than a fan change due to bearings finally burning out from running 24/7 it has had no issues. My bro is still using his old TP 380W.
I've always liked the TP series better than SP, it used to be that the SP series was the "budget" line and the TP was higher quality and quieter. I don't know about now though.
The ticking in the OP's is probably the fan blades hitting something like a wire or part of the grill. I'll bet the OP could fix it himself but it would void the warranty if you opened it. You can still return it for a replacement, just not a refund - warranty isn't voided because you took off the UPC for a rebate. Antec will still replace it for you.