Raven
I don't have anything new to add really. Been using it @ 18 hours, 4v on my Provari with a 50/50 juice. Stellar flavor, excellent vapor! I use one of those juices that has subtleties that don't come through on most cartos, but the Raven delivers them beautifully. Filled by pulling out the carto part way and dripping down the side and let it set about a minute and it worked great from the first. I haven't had any gurgles or dry hits at all. Being that they're slimmer, they'll look a lot better on a Robust than the larger diameter tanks do.
These are a winner so far. So much so, I just ordered a couple more and some replacement cartos.

And I always considered myself a top coil person *shrug*