I highly recommend an ego 510 with the T-cart and T-Atomizers. They allow you to fill up a bit more than a standard cart, don't overflow as much, and if they're clear you'll know exactly how much you have left. They also don't have the material in them that can give you a weird burnt taste. The ego 510 has excellent battery life and a built in USB passthrough which is extremely handy in keeping it fully charged when you're on the go.
	
		
			
		
		
	
			
			
				
		
...  I started out with one of those 'mall kiosk' look-a-likes from a cigar supplier catalog I used to buy some of my stogies from...yes I still enjoy one of those big ringed, huge hand-wrapped babies when I'm out with the guys, and no, I haven't inhaled directly from any 'smoke' in a long time...can't help it, love the smell and taste of my cigars... I successfully quit my mini cigarette-looking cigar smoking going on 9 months now, thanks to that cartridge using e-cig...  since then, myself and one of my brother's (also a soon to be ex-smoker of same mini cigars... yea they were cheaper than cigarettes at $30/carton rather than $80+/carton lol) have both picked up a roughstack, just like Kaderick 
... I know my brother feels like I do 
...   hopefully you'll be able to get your other half and friend to convert over, too 