Currently using the Tornado 900mAh, and looking for a nice big battery that I can use at home. I spent hours looking through the forums and haven't found a thread that compares many models. Screwdriver, GG, Chuck all look like good candidates, but I feel like I have to sift through waaaay too much information just to get the details on these things. It's very overwhelming. Are there others? Where in the forums should I be looking? It seems that there isn't one seller that has a selection of different types. I haven't found one forum that compares several either. I've been to the mod forum, but hell, I don't want to make anything. No disrespect to all the people making their own mods. I have great respect for them, but I just want something that I can screw into my LR atty and go! Sometimes it seems that you have to have an engineering degree just to buy a good e-cig part. 