I started dripping and haven't been able to go back to cartos. Some people will just drip a new flavor right over the old one, some people blow them out then drip the new flavor. I might do that with similar flavors, but once I have a flavor I like it gets a dedicated atty, and will never see another type of juice for its entire life.
For dripping, I find bridgeless attys far superior- perfect example, I had an atty that was just ok, pulled the bridge and now its great. I use ego twist batteries along with my big batt mods, and if you don't mind spending the money, the HH.357 is the best I've used. There are sooo many attys out there all I can say is what I have had success with. HH.357, just really getting into cisco 306s, bridgeless 510s all work good for me. You can even take a regular joye or off brand atty and just pull the bridge out yourself, although the ones made bridgeless are usually better, as they're intended to be that way. I only say to stay away from the ones with the plate w/ 3 holes inside it, some places call them a 'drippers dream'- I have 2 that suck. So this is just my opinion and what has worked for me.
eGo batts only put out ~3.4v or so, so you might need LR to get any good vapor. Maybe grab a twist or a single cell/IMR big batt mod?