Hard to compare. Even though it's the same Idea, totally different. Way more options for BB. Some random things though... I like the DM rba as much as anything for the BB. I love how the "boro" for DM goes in spring loaded, vs the BB nut. Like the filling of a BB boro waaaaaay better. Like the VW of BB better than 4 power settings of DM. Overall, I like and will daily use both, just small things each has favors and negatives to. With a Mini Nautilus coil in each, I really don't notice a difference, except I can fine tune the power with BB, AIO I can't. But on level 3 of 4, it vapes fine to me. AIO is considerably smaller as well.How does the AIO compare to a BB?