Not sure if you got the news but Joyetech rolled out another firmware update for VTC mini i.e. 3.0. It is just awesome how Joyetech continues to innovate on the software side and their update process just take secs, loving my VTC mini.
1. UI has changed a lot, I loved the 2.0 UI though
2. I felt that post upgrade the power delivery was a lot smoother in TC mode but it could be just me. I could feel the difference even in power mode (again but it could be just me ).
3. One of the biggest additions is custom modes, where you can specify the TCR value of the wires you are using, this is an amazing concept. Love that we can use temp control on different wire instead of waiting for manufacturers to support it.
Overall, I feel its a great update (-UI overhaul, I love having more info on my screen ), it just takes seconds to upgrade, so go for it!!
Link to a good review on the firmware - https://www.youtube.com/watch?v=s1ANZXCsADw
Link to the firmware itself - http://www.joyetech.com/mvr-software/?sid=155
Some pics and we will call it a post