Antec (CWT) is my number 3 favorite PSU make behind Fortron (#2) and PC Power & Cooling (#1). They have a very good track record of providing reliable PSU's that provide good power. My suggestions for Antec would be any of the Truepowers above 430w - under 380w or so the Antec units start getting a little on the weak side for overclockers.
As for good experiences, I've had one Antec 350w and one CWT 420w (CWT is the actual manufacturer of all recent Antecs - there have been a few HEC Antecs in the pp days), and have had experience with 3 other CWT units ranging from 250w to 375w. None have ever failed, and the oldest is the 250w at 5 years old.
Bad experiences - none really. The 420w needed the fan replaced once, and that's about it. I've been impressed by the reliability of all 5 of these CWT made units, though only the 420w has proven to be really good for heavy overclocking. The only actual Antec unit, the SL350 - is still purring like a kitten in my parents' system.
