I drip only (when possible) so 100% VG is not an issue for me and is what I use on any of my 510 or 801 devices.
For times I cannot drip, I use Boge 510 cartomizers (I use standard ohm because I have variable voltage or higher voltage devices and have never found a reason to attempt LR on them). But my usage of cartomizers is minimal because of my dripping preference. Most times I will DIY with glycerine that has been cut with 10-15% distilled water for use in carto's, but ..... I drip with 100% glycerin that gets cut only buy the flavourings and/or my pg nic base.
I've tried different types of set ups of the CE2 tanks, but I don't like the hassle or the taste of CE2's with my high VG.
It's what works for ME, and I'm sure you will find through experimenting what will work for you.
VapeOn,
Greg