Most bottom fed mods don't really run that great with an adapter I wouldn't suggest going that way. I would see what style Atty you really like best and the 510 is a good choice since most bottom feeders have a native 510 connection and go that route. If you like another Atty like say a Mini 801 than I would look for an Mod with that native connection more so than to have to pump the liquid through an adapter. There is one Mod that runs well that has a native 510 connection as well as special 901 and 801 adapter and that's the Ali'i it uses a specific adapter with a brass tube running up the center to get the liquid to the Atty better, you can also buy these special adapters and use them with other bottom feeders but I suggest sticking with a native 510 for your bottom feeder choice of Mods, just my 2c