Hey guys,
I actually own a GV650 (a 2009 model) and I really like it. Apart from some issues that should have been addressed by the dealer after uncrating, it's been a solid bike. Plenty of get up and go.
Also, the engine isn't so much of a "knock off" of the SV motor because Hyosung actually made Suzuki's SV motor for the longest time. After a while, the company split off and took some of the Suzuki engineers with them thus the similarities. S&T Motors bought the Hyosung Motors company in 2008 I believe so you might see the name "Hyosung" being dropped. Even now, their logo was changed to "Hyosung by S&T Motors".
The main weak points of these bikes are the electronics specifically the rectifier/regulator. Apart from that, there's a strong online community that can help with any other issues.
I'm 23 so I wanted a large bike that wouldn't be too much for me to handle. I got this bike for $5,000, brand new so I couldn't beat it. The best thing you can do if you own one is learn everything about it and do all the maintenance yourself. Hyosung's dealer network is nothing but thieves and ignorant mechanics that know nothing about the bikes.
One quick note, the pictures you have up for the 2012 model are last year's model.

2012 has a new rear fender.