Highly, highly recommend the mutation x v4. You can check out vapor dna website and they have them for 29. And if you Google a coupon I found one for 10 off of 35! So I went ahead and grabbed me some cotton and after that, the coupon, rda, and shipping and came out to right at 30. I ordered it Friday night and it got here on Monday. So it was really fast. I ordered the project sub ohm version since I like the visuals better than the regular. Everything else is the same, and it's no way a clone.
Massive airflow, and has bottom airflow for flavor. You really have to watch so you don't over drip, or it'll leak a little out of the bottom airflow, but I've never had one and it's never leaked on me. A few drops on the cotton, a few in the well (I only use a single coil, so I use the other side of the well for extra juice) and I can easily get about 10-15 pulls without a dry hit. I close off everything but the bottom because the flavor is amazing. But if you open up all the airflow for the appropriate coils, it'll definitely produce massive amounts of vapor.