There is a difference, obviously with different set ups with the kayfun can change the flavour considerably, cotton and micro coils make a big difference in flavour, plus more options with resistance, but the Aspire Nautilus does have a good consistent flavour which was extremely surprising...I personally would go for the Kayfun Clone tbh, as the price is not too far away and they look the part! For ease it has to be the Nautilus, quick and simple, but you do need to by the coils, £2 a pop, unlike the cheap way of using silica and kanthal/cotton etc for the kayfun but the thing with the nautilus is fecking fugly to be honest mate lol....merchandise, hmmmm not sure about that, but I suppose A Big TOM sweatshirt could double up as a tent! (Sorry Big T - Love ya!) Stay Safe bud!