i find a big difference between cigar and classic.
in my experience theres a big difference between the two devices-in vapour consistency,draw,taste-even with the same liquid,atomiser durability and battery life...both have strengths and weaknesses.
its probably a matter of taste,but overall i much prefer the classic penstyle.
as for the 901...well i actually do the reverse...i use the 901 at home mainly,because of the short battery life and the need to refill regularly...otherwise i could be left high and dry when away from home...so i usually take the penstyle out with me,hidden in a lanyard,and i can vape away til my hearts content.
most new esmokers see the limitations of the smaller devices soon after buying them,and then usually move up to pens,cigars etc...
but you just cant put some of them off buying one with logic at first,cos they look like a ...,and thats important to lots of people at first...