I got my AIO and used the stock coil for about a week. The flavor and vapor was great. I didn't have the burning coil problems or anything. I think you just have to get a feel for how fast it wicks and adjust accordingly. To say I had to change my vaping style is an understatement since I usually vape DTL from a dripper. But I enjoy the change every now and then. Plus, it's a great little take-along device that gives a real satisfying vape while I'm out.
And the lights...
But, I couldn't be satisfied with that. I had to try the little hack where you pull the cap off the top of the coil for more airflow/DTL style vaping. I'd used the first coil for a week and had another one anyway. So, off with the cap! Well, to be sure, without that little cap over the coil the airflow was greatly increased and I was able to straight lung it. A whole lot more air coming through but (and this is the sad part), I lost a huge amount of flavor! It wasn't even acceptable. No way was it worth the extra amount of air I was getting.
No worries though. I immediately snatched that thing out and went for the other stock coil I had. Or not. It wasn't in the box. Apparently, I've lost it somewhere in here. So, my only other option was to install the rba. Unfortunately, the flavor with that was no match for the 0.6 stock coil either.
Another thing I noticed was that the side holes on the rba are at a fairly high level in the tank. After about a ml of juice is vaped, you're going to be below the level of those juice holes. While I understand that it will still have the bottom holes to wick through, I wonder if it will have any effect on the tank pressure or wicking in general when you get below those side holes. I haven't got to that point yet.
Lastly, has anyone rebuilt any of the stock coils? Will that little top cap have to be removed to rebuild them and if so, is it replaceable? I think the best vape for me on this is going to be in replicating those .6 stock coils but not worth it if I can't replace that little cap. When I removed the cap from mine, it flew off somewhere and I haven't found it yet to check. And, if anyone comes across a great build for the rba in the AIO, please share.
Oh yeah... be careful if you get one with a drip tip that's hard to remove. Mine was and it pulled the entire chimney section out rather than come loose. The airflow ring fell off and it's o ring came out. Had to search for that. I pried the tip off the chimney part and put it all back together but it still comes off with the drip tip every now and then.