I bought the Volcano E-Cigs for my first unit, I believe they are the same model, L88B or something like that. But after I got my Joye 510 from Arno, I've placed it in my back-up storage just in case something ever happened. These to me are the start models, they work fine, but after doing some research and finding out that you can directly drip on the 510s, I've never looked back.
I'd go with what people here are saying and just save the money for liquid and other accessories.