purdueman { ugn hate saying that, go IU }
the vertex in180 is thier best skimmer out of their line's, i have owned the in180 twice, never had pump issue's or noise. it was just too much skimmer for my 80g system.
i currently run a vertex in100 with a atb airstar pump and this thing is a monster.
genesis, i do agree that the vertex in100 just doesnt pull enough air for the body { switched pumps to a airstar mini } i know mojo like's the bk, as i owned one also and just wasn't impressed per $ my modded in100 will kill the bk mini 160, nice feature is bk breaks completely down and apart, but if the pump goes plan to shell out some $ to get a new one. if you got the $ to spend then get the atb 840 or wait for the new bm to be released as that will be my next skimmer to test out