The aspire cleito has an rba available but you really need to get the bubble glass as well as the head takes up a lot of room. I have one actually and find it quite good.
Most of the Smok tfv tanks have an rba head.
Also you can get an rba for the Uwell crown, that's a good tank, even though it is a bit dated. I don't know if the rest of the uwell crown series have rba's, would need to look that up.