Ok I put my order in for the GLV 2 3.7 Mini Black Lava.........
I went through a similar problem. I use the eGo with the 510 atty on it. I now fill my cart in the morning and after my initial vape session, I will top off my cart before each session. It is similar to dripping but I only top off and can go for an hour before I have to top off again. Since doing that, I no longer get the "BURNT" taste.
I'll second this opinion. Their Honey Flu Cured Tobacco is great even in the prefilled cartos. (so is their Grape!). (possibly other flavors). With that said, with the carto's you can remove the soft top cap with a fork or whaterver is handy and then insert a drip tip so you can refill/top off with ease. (pull the DT, tilt the carto, drop drips like you're filling a beer and don't want suds in order to keep it from going down the center hole where it will flood). Topping off your carto keeps it fresh and can be done repeatedly. Some people get 3 weeks ... but my longest is 3 days.I've had very good luck with with my honey flu cured tobacco Cartos from Liquid Xpress. I'm not sure what other flavors they have, but I know I saw some other ones there. They're not too expensive, so you may want to try them as well with some of the other suggestions to find what you're looking for.
The GLV 2 looks like it may just work.