It's hard for me to recommend a DL atomizer as I'm totally MTL. I would guess, though, if you want to be more specific, maybe talking a bit more about the pros and cons of the rebuildable you have? For example, if it's straight flavor you are looking for, sometimes using an RBA and squonking it if dripping is a pain might be one option. Knowing if you prefer single or dual coil might be helpful too, and also, what types of coils and wattage ranges have you tried with the atomizer you've got. Sometimes for straight up flavor using an exotic coil build (you can get them premade) will offer more surface area, and hence, more flavor.
Also, a lot of these preferences are going to be totally individual, so the more info you can give the better, probably. Etc.
Best of luck with whatever you wind up going with!
Anna