I use the AW flat top 18650s. Never had a problem with either my SB or Omega.
Only thing with them is that they're a really tight fit in the charger. Inserting them you can just sort of snap them in. But when you remove them from the charger, IF your pull up on the positive end first, the plastic wrap that goes over the top edge can catch on the charger and nick/rip it. I had to patch one of mine with that liquid insulator. Now I always remove the negative end first... I'm not sure if that positive cap goes all the way to the edge but it was exposed just a tiny bit and I was worried about it contacting the barrel of the PV. Just something to keep in mind if you get those.