I think they are Legit, Yes there have been delays but this is fairly difficult to do otherwise there would be loads of companies doing it. Yes Avalon beat them to it it terms of delivering the first working unit but they are not exactly flooding the market and the latest batch price is 5 times the original price point.
I considered ordering some of Butterfly products but decided to purchase coins instead, short term this has been great, long term who knows. If these units do ship then those lucky enough to be in the first orders will do very well indeed.
For me there were just too many unknowns. For instance 60 Gh/s sounds great but what if the total Hashing power just expands to make this below average? Then there were the delays and now the teething problems. I do hope they get it sorted but I am waiting to see how it turns out before investing in ASIC.