The V2 plus automatically steps any intensity / color hourly set changes into small changes every 10 minutes. It also has the lightning program and I think possibly control from phone, but I don't know that for sure. Cost went up about $50-70 on the V2+. Coverage is similar V1 to V2, I'd say the V1 had a slightly better spread end to end under the fixture just because the LED's were a little more evenly distributed whereas the V2 has kind of like four large clusters..but still nothing like others with "puck" style.
My tank is 72" x 24" tall x 18" deep. Both lights (V1 and V2) actually cover pretty well, lowest is high in the back along the glass where I have a frag rack. Easily grow caps near the ends..maybe 8" in from ends, lower light LPS, shrooms, Acans fine on the sand bed and all the way to ends. Light is about 10" off the surface. I think it's a nice light for the price, we'll see how it does as I ramp up with more SPS like my past systems. Also may eventually slide it all the way towards one end and fit a Radion 15 G4 pro at one end for some comparison.
I know it's not the best light made, but decent and I didn't want to dump $2k+ on lights right now. Also, my LFS offered a very good trade-in on my V1.