FYI, the TV 'revolution' oil cartridge comes in 3 resistance levels for various wattages and vaping temp preferences. They're all ceramic/metal with no nasty wick material inside, easy to clean like new (alcohol then boiling water), durable, and really not very expensive (and you can buy each component separately for DIY on other brands with 510 threaded batteries). $30 bucks is way cheaper in the long run than replacing $10 disposables with wicks, plus their warranty seems to be no-questions-asked (again, from FC forum members, no experience with it myself).
I like their 'evolution' model for waterhash, kief, thicker waxes, and even as a one-hitter for flowers. Although this one pulls too much current for the lower quality brands, so better to get the expensive TV battery handle (again worth the cost in long run). It uses convection, as opposed to the conduction pen-style carts above.
They have all kinds of other stuff too, including a new model with 5x the battery life about to release (i just read about it on FC forums, eager to try it since I found their original 't1' bowl-sized version ate batteries too quickly for my taste). If a better unit/brand comes along i will switch, only loyal to TV because they are the absolute best/safest products I found after wasting $$ on a bunch of others.