I have a VaporShark DNA 200, a lost vape efusion dna200, a lavabox dna200, an OPUS DNA 200, A hcigar vt200, a hotcig dx200, a tuglyfe dna200, and a reuleaux dna200. I know ridiculous but I've been collecting them and my favorites are the Reuleaux and the Vaporshark DNA200's. My list being 1# is my favorite and so forth. Also listed is Vape Time before charge and what settings I use them at, based on gaping roughly 20mls of liquid a day.
1. Wismec Reuleaux DNA200
(64-72 watts at 0.42 ohm for 2 days(36 hours)/LG HG2 Brown 3000mAh 18650's)
2. Vaporshark DNA200
(44-56 watts at 0.38 ohm for 3/4 of a day (10-12 hours))
3. Opus DNA200
(72-80 watts at 0.63 ohm/Just short of one full day(12-14 hours))
4. Volcano LavaBox DNA200
(58-64 watts at 0.84 ohm for 3/4 of a day (10-12 hours))
5. Hotcig DX DNA200
(82-94 watts at 0.26 ohm for almost 3/4 of a day (8 1/2 hours))
6. HCigar VT200 DNA200
(110-120 watts at 0.14 ohm for just over a half of a day (7-8 hours))
7. Flawless Tuglyfe DNA200
(136-150 watts at 0.11 ohm for a half of a day (6 hours))
Hope all this info is helpful to pick your next mod. If you don't like the size of the Wismec Reuleaux go with the Vaporshark. It has the most well done case readings and is well put together not to mention from 15%-20% to 100% in like 45 mins! At that rate battery life don't matter because it charges so damn quick!
Any other questions I'm happy to help out.