I've heard good things about Voopoo and Smoant. It might be fun to try a different manufacturer, it sounds like you could probably rehab your Alien. I had a functional 2 batt mod but decided to try a Tesla for my next mod, and I'm very glad I did. I am a fan of the Tesla Nano 120 watt Steampunk, but it may not have enough wattage for your needs and what you are used to. I'm interested in a lot of the newer dna mods, my current desire is to get the Gaia, but I'm not rushing off to do anything at this point, as I got 2 new mods this week, which is far more than usual!!!! 
Anna
Anna