I perfer a 2.0ohm on my Volcano Infernos (eGo style batts) as well. best all around out of everything I have tried on them. No problem. I actually got a little something out of it myself. 
Need a little more info. What type of juice are you using? Ratio? How much do you put in your carto? Do you take a really slow pull from your carto, medium, or fast?
At first glance I would say try a 2.0-3.0ohm carto. But maybe you don't have enough juice in there for when you crank up the voltage, maybe you are taking too slow of a pull.
I use ECOpure Rich--100% VG. I can't use PG at all. For a 100% VG juice, it's as thick as PG. The other VG juices I tried were too thin.
I use ECOpure Rich--100% VG. I can't use PG at all.
Yeah, thinking she's using Virgin Vapor 100% VG
Actually VG is thicker than PG..... PG is very thin, kind of watery....
Yeah, thinking she's using Virgin Vapor 100% VG, which is about as thick as most pg/vg blends, though. If not, and its another Eco-pure vendor, yell out.
Oh and Trukinlady... I used my little baby hi voltage visions with REALLY thick 100% VG, I was just in a fog when I read your post last night. BUT clearo things, especially visions, tend to have a breaking in period between 1-2 tanks worth before they perform really well. Thinking you're just stuck in that right now, so I'd just get the voltage somewhere between where it hits like you're vaping air and where it burns your throat out, and get thru the first 2 tanks, and then it'll be better. I'm not a huge fan of visions for that reason. BUT those baby ones were the best I tried.
Originally Posted by trukinlady
I use ECOpure Rich--100% VG. I can't use PG at all.
Very interesting, i am the same way.....i even asked some veterans on this, and give what i was experiencing due to it, may i ask why you can't? I want to use it to compare notes.....I think it would be interesting for the July issue of my vaping magazine to reach out to the VG vapors so as n00b's know they are not alone.
If any of you have some Phoenix XL, CE3 bottom coil type cartos that haven't worked out for you they can be made into an excellent tool (assuming the coils are still good) for testing your juices without having to fill up a tank to discover you don't like it. If interested look at my post #1723 in this forum.
http://www.e-cigarette-forum.com/forum/gotvapes/292476-version-2-5-vision-vivi-nova-stock-now-vivi-nova-review-thread-173.html#post6534404
Errol