CPR bak-pak vs Coralife SS-65

[bv_reefer]

i posted a thread a while ago about whether it's even worth getting a coralife super skimmer, there downfalls, efficiency, etc. most posts showing it skims OK, but is prone to flooding. well on craigslist i found a decent CPR Bak-Pak 2 Protein Skimmer with bio filter for a good deal, and did some research about it, still want some final opinions before purchasing the product, is it sufficient for an sps predominant tank? how much skimmate can i expect out of it per week?