You won't regret it. It's a great mod. I am so happy with mine. It's definitely not your standard glass, I've dropped the magnetic battery door several times onto tile with no issues, the metal sustained small scratches though as expected. It's a very well constructed mod, I don't know if you saw but I took mine apart to see inside and posted photos. It's clean, but furthered the chip mystery even more... The temp control functions great though. It keeps a nice cool vape that I tend to enjoy at about 440-450F. However, in order to utilize that 70W you need to turn the temp way up otherwise it won't really break 50W in TC mode.
Somehow I missed that comment earlier.
The one place where the 70W in temperature control comes in really handy is with temperature control builds with really thick wire. It's still going to reduce the wattage below 50W, but when you first press the fire button it will fire the coil at 70W, heating the coil up to your set temperature much faster. You won't get that lag before it starts producing vapor, it will be a virtual instant-on.