You might want to look into dripping. No carts/cartos, just put a few drops right into your atomizer and vape away. Obviously this has it's limitations (good luck dripping and driving) but if you don't want to mess with cartridges or cartomizers, your options are limited.
And wv2win... you keep plugging the darwin... I'm sure its a great PV but at a $245 price point, it's not something most of us are going to look into, especially those of us looking in the New Members Forum for helpful information. Not trying to dog on you, I'm sure it's a great PV!
I would have gladly pd $200+ for a high quality PV versus the $190 I pd for a mall kit I had to replace in a week. I see many posts requesting a good PV with replies price-based rather than quality. Not saying there aren't good $50 PVs out there but they're in a different ballpark than the Darwin.