Guess i have to Chime in here
Which Pen style/brand to get?
Easy answer - All of them
Ok, heres My opinion on the subject.
The DSE-801 batteries do seem stronger and/or run longer, Atomizers seem weaker and dont last as long.
The RN4072 Atomizers, mainly the 4 hole (newer) ones, seem to last longer if not abused (over heated a lot, or run through to many cleaning cycles). They throw out the most smoke for the money. Nothing wrong with the Rn4072 batteries, they seem to have better switches then the DSE model.
Generally, Njoy are these, but you Can get them alot cheaper with out someones company logo on it.
JKBC304 (Kissbox classic) Veery well made, Strong atomizer, will take more abuse. No cleaning cycle (that i can tell). Plenty of smoke, draw is easiest made so far. Maybe to easy. More expencive, but you do get a longer warentee and a good product over all.
Those are the main 3 kinds of Pen Styles, the Health brand ones are cheaper copies of the first two. Its a 50:50 chance to get a good one.
(i know someone is going to say they are made from the same parts, but just because something is made from the same factory, does not mean its the same item, they make 4cylinder engines in the same plant as 8 cylinder ones)
Basicly thats my break down, think that covers it all
