I've had the authentic Velocity for a little over 6 months now. I love my vertical Zipper builds (dual 30g Zipper, 6 wrap, 2.5m ID). This RDA makes it so easy to install vertical and horizontal builds. It's also really easy to adjust the airflow.
However, it doesn't even rank in my top 10 favorite RDAs for flavor. I've tried at least a dozen different e liquids on it and not one had great flavor. When I have the same e liquid on one of my favorite RDAs (Zenith 2.5, Plume Veil 2.5, Aeolus Lite, Kennedy 22, Tugboat v2) and my Velocity, it's amazing how bad the flavor is on the Velocity. I don't know why the flavor is so muted, or why so many people say it's the best RDA for flavor. It is NOT. I still use it every day, just with a liquid that has a really intense flavor (Jelly by Twonk at present).
I'm really hoping they release a V2 that addresses the flavor issue. If my current Velocity broke, I would not pay $120 for another. Although I don't think I would even have the option, as they seem to always be sold out.