I use a combination of a couple of 901's, usb powered janty classic with manual switch, 801 penstyle and direct drip on to a super mini with one hole blocked, approx 5% of the time, 95% of the time I use the screwdriver. Its consistant, it vapes very well, the
batteries last. Its actualy has good ergonomics, the movement of pressing the switch has the SD approaches the mouth is easy and that slight pre heating improves the
vaping.
I think the 5% v 95% realy says it all.
One slight edit, I mainly drip and put a puddle on top of the cart, I dont know how it would work for somebody who just used carts.