My go to delivery systems thus far have been Smoktech carto tanks.
I just recently got some Kanger T3's, and I'm pretty impressed with them thus far, and this is after I SWORE to never again use clearos. The jury is still out on these, though. They could be dropped from my rotation at any time.
A lot of experienced vapers have moved on to RBA's, or rebuildable atomizers. I'm not quite ready to make that leap. I've found a very satisfying vape with my carto tanks.
I used to drip, but that was after my initial clearo ban and before I discovered carto tanks.