lately anyways, OCZ power supplies and RAM are highly rated as obeseotron has pointed out.
I have the 450W version as of 2 days ago, and I like it alot. slightly more flexible cables than my X-connect, and a single 120mm fan which I like a little more.
It delivers good power though, stable so far, no worries. I also have OCZ PC3500 which also works great and is reliable. (Just FYI)