Welcome to ECF mirthaddcf!
Lots of good advice here already, and like someone said it's subjective. There are lots of favorites, but after some lurking, you should find that the bad things are generally agreed upon en masse. I personally love the Go-Go, and it was my first kit. Some people eschew it due to it's proprietary threading where the atty or carto attach to the battery. However, I did just fine for a couple of months, and then got a GoGo to 510 adapter, and can now use all the common 510 items w/my GoGo batts as well! I love the GoGo cartos as they hold a lot of juice (about 3ml) and can last some people a couple of days before you have to add more juice.

So now I have the best of both worlds (GoGo
and 510)! Plus the batts last about 2 days between charges. YMMV of course, as it depends on how often you hit it.
Just research all you can, and like someone else mentioned, it's overall cheaper than the nasty analogs, so trial & error will apply in most cases.
Good luck with your journey!
