I'm having a lot of luck with my KB yesterday and this morning. But, when I got it, it didn't seem to work well at all. This weekend my primary device was the Screwdriver. Now it seems as if it's taking a rest.
My EVO was my primary device at the end of last week.
Honestly, I've been alternating. My favorite used to be the 901, but I never even vape that anymore.
I'm getting a lightvaper today or tomorrow from secondson, too.
So, I would say my favorite device changes often. I like my minifoggers and my minipipe and I even like my 4081 with a usb passthrough and my apc powerpack.
If everything was perfect all the time, BE112 (801 with two-holes or no-hole atomizers) would be my favorite all the time. But, it seems I am destined to switch to what works well for the day every day.