I have a authentic kayfun Lite and a smok Caterpillar (which I love!) but I find myself wanting another RBA so I can have more flavors in the rotation without having to rewick every time. It needs to have a long enough 510 connection to work with my 4Nine...other than that, I'm open to just about anything. I really enjoy using my smok Caterpillar and am considering just buying another one as they are super cheap and work great with my mech. Would I be missing out by just buying another RBA that I already have? Does anyone have any suggestions?