I love this tank! It's a perfect size to fit any mod I've got laying around at home and has heaps of airflow too. I also like the top fill BUT unscrewing the whole top is a bit of a bummer. Don't get me wrong, it's not a deal breaker, but every time I unscrew to re-fill my e-liquid I have to hold onto the glass, otherwise it unscrews the glass too, which can get messy. If you like a tighter vape, I would buy a smaller drip tip too as the one it comes with is a little wide for my liking.
The GTX Coils though are incredible! The best Vaporesso has at the moment. They consistently produce awesome flavour even when the coil is on its way out! I've been using this tank for weeks now, changed a number of coils and not once has my actual e-liquid been burned. Love it!