Got the Youde Bellus RTA and am very pleased with it. It is superior in vapor production efficiency, taste, and just about every other way than the Subbox Mini and Lemo 2 which are the two RTAs I had. It produces more vapor per watt than the Subbox even with one coil (so I don't bother with both coils even, although I tried it) and it's roughly equivalent to the Lemo 2 in this regard. The tank is a solid true 5ml giving it the biggest tank. The juice channels are much better than either of the other units as well, and you can go with 70%/30 VG/PG chain vaping and not get a dry hit. Oh and by the way, it's cheaper than any of the other units too. Check it out.