I've read / heard cartomizer refill numbers like 13 times, up to 30 times or so. The minute mine begin to even HINT of a burnt taste I put them in my "refill" drawer to be refilled. I'm new, so the most I've refilled any cart is maybe 4 or 5 times.
I'm with you on the atomizer thing. I know people personally, and certainly here on ECF, who definitely prefer them to carts. But they're constantly dropping or dipping and topping off, and they don't mind a bit.
The way I
vape, a cart seems to last me about 1.5 days. But I like to switch carts for different flavors, so I've really stopped counting.