I am awaiting delivery of my FF today!!
But to answer your question, I settled on products from Delta9Vapes (now UpTech). See the Persei and Omicron threads in the Portables section. For stealth on the go I recommend the Omicron with a 3.7v Titanium Kiss cart. The Kiss is a load as you go system (one dab at a time), but features a ceramic bowl and titanium coil. For more heavy duty use they have the Persei battery and Hercules cart. Materials, build quality, warranty and customer service from the company are all top notch. Plus the founder is an active participant in the product forums.
Back OT, did I mention my red FF is out for delivery????
IT IS!!
Package in hand...
Box open... Firefly, check. Spare battery, check. External charger, check. Free grinder I won't use after reading this thread, check.
Firefly packaging is very classy. Red is very nice, like a sports car as others have noted (not really metallic looking paint though). I may decide to pickup a dark grey top and battery cover just to mix things up. Love the heft of it in my hand, I am used to associating weight with quality. Mine in unblemished, and everything seems in it's place. Except I notice the screen in the bowl seems a little crooked, on one side it touches the bottom of the bowl, but on the other it is pressed down and I can see the black o-ring there.
Gonna get this thing in the charger and will report back!!