There are a couple things about the VeloEQ15 that im not liking such as the light weight of it. That being said, it may measure well & sound great. So i cant make a definative comment on it. I can however comment on the VtF-15H. I wont sit here & claim that its the end all say all of subs just because i own one. I can however say that it is a wonderful sub & for the price it is an absolute homerun!! Will it dig as deep as a PB13 Ultra? No but with room gain it gets flat down to 16hz. It is a very musical sub & seems to be indestructable.
What will you be using the sub for...movies, tv, music?
What size is your room? Is i open to other areas? Total size?
You mentioned youve read about these subs so im sure youve been on these threads. As youve seen, we need more info to help give you pointers.
I too am looking forward to seeing how this sub compares to others in its class. Velo makes a good sub. Hsu also makes s great product & tends to be more performance per dollar in comparison. In the looks department i feel the Eq15 fails. I dig the look of the 15H myself.