I'm ready to click the order button for the Bronze one. Any update on how everyone is liking theirs?
The GSub 2.0 was my first PV. While it performed well as far as VV's go, it did not last me more than two weeks. Now this is partially my fault, but also due to an inherent design flaw. The 510 connection is surrounded by plastic with the wiring being soldered to it from the VV circuitry.
Being so new to electronic cigarettes in general and being a bit of a bull in a china closet sort of person, I over tightened my Protanks at the time. Eventually, the 510 connection began to spin in place as it was not secured like you'd see in a metal construction mod. Due to the turning, the threading on the inside eventually ripped from the solder and I was forced to resolder the wiring onto the 510 connection. Not thinking to epoxy the connection to the plastic to prevent this from happening again, I ripped the wiring again, but this time it ripped free from the VV module.
At that point I gave up on it and used an Ego-C twist for a week or so before buying my MVP. Both of those have been relegated to emergency backup status since I have gotten my Sigelei #13a while my GSub currently sits in a drawer waiting to either be salvaged for parts or repaired. Since I have no real use for yet another VV device, it'll probably sit there until I decide to gut it completely and build my own mod.
TL;DR: The 510 connection is housed by unsecured plastic, over tightening will cause it to spin in place and rip it from the wiring. Otherwise it performs well.