The yak byp's release date has been moved to May.

As for how the ultimate compares to the other bipes, they are a totally different style. The ultimate really is more of a scale aircraft. Its kind of like a class in between the foreplay and the mini funtana. It can do any 3d manuever but it won't do it as easy as a profile, however, it can handle some pretty strong winds and much harder crashes. I fly it indoors as well and it does great. Whenever you get an airplane that is scale you always sacrifice something but with the ultimate the sacrifice is extremely minimal with some plusses in other areas. I have heard of some people having success with a 450 motor and if that is what you really want to put in a plane then this is the bipe you should get. Either that or a mini funtana or fliton extra.