I have tried and interchanged parts from both blu and volcano. I found that if I drip on the volcano atty, it gives me about 8-10 puffs per 2 drops, just touch the tip of your juice bottle to the mesh and gently squeeze out a drop as you slide it along one side the mesh "V", then flip over and do the same, that way you control how much juice is going onto the wick, rather than dripping it from above, possibly missing or putting too much at once. It's kind of a combination of dripping and dipping. I found this worked well for me. I also found it to be fairly tedious to refill the little carts for the volcano/blu. It takes a little getting used to, but if you "drip" the way I mentioned, you might get better results with out flooding or ruining your battery. It basically spreads one drop along each side of the mesh allowing it to soak in more evenly and more controlled. Just be careful not to squeeze too much juice out onto your wick. 1 drop on each side of the wick is plenty.
Volcano is about to release a 510 model (Magma) so that is good news for those who like the company,their great customer service, fast shipping and might want to try a 510 model. It should be released very soon. I don't know what their pricing will be just yet. They put together a new version of the PCC for the 510, but I have not seen it up close (waiting on the kit I just won in a contest to arrive so I can compare it to the other 510 parts I have) The nice thing is 510 and L88B parts work together, so if you are curious, you can order just a 510 atomizer, try it with your blu/volcano batteries and see how you like it. Also if you want another filler alternative for the carts, try the blue foam mod, just look it up here in the forum.
Everybody has different wants/needs from their e cigs, so don't give up on something you like just because it did not work for other people.