Never personally had an engine built by them but I know many people at the local track that have and they seem to be very pleased with the results. I see your are in NY, just an option but why not give rivers racing concepts a call. They are from herkimer(spelling?) and I personally have an engine that chad has built the bottom end and I am very pleased with it. You could also try contacting him here under mafia motorsports.
I live nearby American Speed and have visited their shop--nice guys, very knowledgeable. A guy I know had them perform some machining operations on his 454 block and he was very pleased with the results. They are a bit pricey, but I believe that they do nice work.