I`m using the Prime and the GTR today, here is my opinion of them. They both produce a quality vape in a classy package but I think that`s a moot point since the vape you get is more a function of the coil/wick arrangement. In terms of aesthetics the Prime, particularly in it`s PEI extension guise, is one of the best-looking atomisers out there.
If I had to choose I`d take the GTR though, because the mechanics of filling it are simpler than the Prime, which can lock up if you over-tighten it. The GTR is a bit more spendy, especially if you get the 4ml extension tank section. I don`t think either of them would disappoint you.
