Top coil! Warmer vape, easy to fill and unlike what I just read (?) I have had zero leaks or issues with it. My one and only dry hit was my very first day i used it and didn't soak the wicks long enough. Maybe ur local B&M are acting like that because new tanks are out w/bottom feeders and that's the "in" thing at the moment.
If I were a menthol person and wanted a cooler vape, maybe I'd go w/bottom but I prefer a warmer vape and less hassles. I've seen my friends dump more juice all over trying to unscrew and fill a bottom coil...what a mess.
Yes, you have to keep the wicks wet on a top coil and at times spin/twirl the PV upside down, but to me this is exactly what I'd do with a cig as I was smoking with an ashtray. I kind of would "pack" the cherry after flicking the ashes so it wouldn't fall off, i would twirl the cigarette on the insides of an ashtray. This habit carried over to twirling my PV and keeping wicks wet, minus the ashtray. So it is now my new ritual and it helps me w/the analog quit.
Good luck to whatever you find works for you!