So the first one I got one of the screws was totally stuck, ecigmafia gave me an account credit for that, so pretty awesome they stand behind the products like that even when they are on clearance. So I ordered two more just in case the next one had an issue. It is shockingly a decent RTA. The wicking is difficult if this is your first RTA, might not be the best. If you have used RTA's before it isn't a big deal. The tank is tall! It is old school for sure. The drip tip is 510 too. Top airflow and surprisingly not bad flavor. I can run this thing at 100W NP, it's actually better than some newer RTAs in the flavor department. Wash it when you get it though, slight machine oil in it, not a big deal at all, but if you get it set it up and taste something funky it needs to be cleaned. All and all though flavor is pretty great once it is all cleaned and running with some nice coils in it. The top airflow is on the loud side, but works great easy to turn up and down. I run it full open and if you could breath very calmly you could just about breath underwater through it. So it's not that super wide open airflow, a little restriction. 3MM coils fit in it pretty well it is a little tight but totally doable. All and all though performance of the RTA 4 stars, performance of Ecigmafia 5 stars.