I'm just plumbing mine in. Bought it from Ocean Motion, 4way version 2 I think.
http://www.oceansmotions.com/
I think it's going to be great, makes zero noice when I plug it in not installed and very well built. Paul (Mr Ocean Motion) I agree is very helpful and totally into his product and customer service.
I also bought one of his Rev units looks pretty cool and again is well build.
I'll give more feed back when it's running.
Dave