Missed you guys, I was in the hospital for some tests. The funny thing is that after discrete-o-vaping for a couple of days, on the last day I figured who cares, they going to kick me out? and started plain old vaping in my room. The only reaction I got was benign curiosity from the nurses, and then one of them went ecstatic over the smell of my Macaroon juice I had in my XL, and THE DEVICE itself, telling me the sad tale of her husband giving up on vaping a couple years ago after messing for a couple of weeks with little e-cigs "that looked like cigarettes" and "tiny cartridges", and reverting to a pack and a half of Cowboy Red Deaths. So she took a picture of the XL with her phone, and will be getting her husband up to date.
Actually Vapage is a pretty good reference "get started" site, with a lot of good technology, like their Barfly disposables, their eGos, the Echos, the 1.6 ml crystal cartos, and of course the Vmods. The one thing I wish they offered for the eGo users is the sweet EMDCC (1.5 ohm Dual Coil 4 ml vertical coil cartos with the diameter of an eGo battery).
BTW, re: eGos, just got several more of the "2.2 ohm crystal 1.6 ml eGo cartos", and they put out astounding vapor on an eGo battery, even the 3 ohm ones (!). And it's the ONLY carto you can test/change juice/flavor in in minutes, because the wick is so tiny, and you just syringe-aspirate any leftover juice from the bottom of the transparent chamber, then vape the little wick dry, and drip in say 1/2 ml of new juice to try (keep tipping to wet the wick).
Summary for new XL users:
As far as 510 cartos on the XL go, I've tried a lot of different ones, and the 1.7 ohm Resurrector and the 2.0 Boge (same as the Ikenvape 2.0 ohm carto) works best for me. It'll last 3-6 days of heavy vaping (the resurrector lasts longest) and then starts clogging or tasting sub-prime, and you just have to accept the facts and toss it. I expected better results from horizontal coil cartos, but it seems many are just a hair off in centering the coil, that causes something to burn i.e. a bad taste. I've never had good luck with the Silos that way. The Kangers and some other horizontal coil cartos have a persistent taste that many connoisseurs find unacceptable.
After a good few weeks trying various atties, the IKV i06 was very good but the whole drip-tip issue was annoying, the IKV 1.8 Ohm 510 atty is easier to use and very nice, and I finally settled on the HH.357s as my best-tasting vapor monster, and have been slightly-tilted style chain-vaping on the same atomizer since over a month ago. It seems high-end atties vary so much that luck makes many a favorite. It looks like letting the XL stand with the atty flooded cleans 'em easier than a PGA bath, almost as effectively, and bypasses the significant "post bath blahs".
The 4.8v NiMH batteries (with a tiny magnet "tip") work great in the XL with SR atties. You have to swap batteries more often but there's a good dual bay charger out for them now with a working red-green indicator LED. My theory is that for good taste and nicest vapor an atty coil with many tight turns is needed. That's readily available in many of the HV and SR atties at 3+ ohms, but they must be run at e.g. 5 volts. At 3.7 volts, the only 1.5 ohm atties that offer many turns are like "cisco coils" (like the HH.357) that use a low resistance wire. The Kick would seem to open more options that way, but I haven't tried it yet.