Well, Ive been hit with pretty much every glove mentioned on this thread and that is how I learned that I dont like Hayabusas, I dont find them to be good sparring gloves. In the ones I have played with, I felt that the quality was lacking and the wrist protection was not as good as other brands.
To me, Hayabusa just seems like a wast of $$$ when you can get something from Twins for much less and is a proven glove that is well regarded.
IMO, If you are doing Muay Thai, get a glove from a reputable MT company, If you want to go to an MMA gym and dress the part, get hayabusa and stuff like that. The pair of Hayabusas that I owned didnt last very long at all, maybe 6 months of being rotated 2 times a week at most. The velcro tore off and they got packed out pretty quickly.
I know people want to buy flashy gear but the solid Muay Thai gear companies have served me much better than other gear. All of my Fairtex, Windy, Twins, top King stuff has been great, never an issue. Every time Ive bought MMA/ufc oriented gloves, Ive been dissapointed.