Welcome !!! Like you, I always go back to atty's, I always go back to dripping. I haven't been able to make cartos work for me either.
For the last week I have been using the Tube Tank from Volcano ecigs....works great with my ego, holds about 3mls, internal component is a cartomizer and I am still loving it. the only draw back has been some flavor loss over the last week, but the vapor and throat hit is great. Posted some pics of it on my ego.... I hear good things about the Map tank also.
Honestly, Its all about what works best for you. You would think, after 2 1/2 years of vaping, and I always go back to dripping, I would quite looking for new things....I must admit, so far the Tube Tank has been great for driving or other times I can't drip. Much, Much better than the Ego tank or the 510 Tank.