I have been gambling on bitcoin for years now. The most stable and trustworthy one is unfortunately still primedice. Unfortunately because it means we lack innovation in bitcoin. I think I was expecting a lot more different gambling websites with a lot more competition but primedice still kicks ass comparing to most others.
Lack of innovation in bitcoin? It's a bitcoin gambling site and that's it really (and still one of the best). really much innovating you can do with dice sites though. Last I heard Primcedice was looking to expand their brand into other types of gambling which I think it a good thing.