I like the turbo-flotor skimmer. Made for a 250gal that I have on my 125gal. Takes a lot of adjusting but onces it's adjust it works perfect! People said the aqua c remora is a great kind of skimmer. Just make sure you get one rated for a much bigger tank than yours.
i have the aqua c remora pro on my 75 gallon reef. its only been in use for a few weeks so its still breaking in. but so far its pulling out some decent looking scum. whatever u do... dont get a prizm, they're junk.
Like i said, the prizm is junk. I had one a while back and it worked ok for about 2 months and then nothing. IMO it was just a big waste of time and money. I like my remora pro a million times better.