I've heard good and bad things about the CSS 65. Main thing being it's big and bulky. I have the Aqua C Remora on my 29 and my tank has never looked better.
Look at the thread on this page about the Remora and third post down the person mentioned they were selling their Aqua C with Skimmer box!! You can't find a better skimmer for the price IMO
. I suggest you snatch it up quick as well because they don't last long.
Normal price for a used Remora w/pre-filter box is around $110-$120 shipped!