the advise i was given is to go with a reef octopus or bubble magnus. i ended up with an asm g3 from one of the guys on this forum. saw great reviews on the asm. check out the for sale section if your looking for a good deal
you also wanna go with a skimmer that is rated higher than normal so if your tank is a 75 you should go with one rated at 125 or 150, just some of the advise i was given. my tank is 125 and skimmer rated for 300