i'm considering trying the "pilot", but have a few concerns. mainly about topping off carts. if i understand the 401 correctly, you cant top them off without a toothpick or pin, and a set of tweezers...is this correct? the cart needs to be disassembled? i have a 901 from steve, and i do not like to drip on the atomizer, i solely top off. and i mostly need to do it discreetly and quickly, like while sitting at a red light in my car, or in a bathroom stall at work. the 901 tends to leak liquid, and i was hoping the different design of cart/atomizer might be less prone to that..opinions?and last, do the batteries last a lot longer than 901's, or is that more unique to the "evo" version....I obviously dont have a lot of money, or i would just buy every e-cig on the market and find out myself. i'm hoping to see reviews as people get them, but am hoping to get answers to my specific concerns as to if this will work better for me without spending hundreds on 401's, evo's, dura's etc.btw, steve has been great, and im happy with my 901...just wondering if i can get similar/better performance with less leaking and better batteries, without needing a "lab" to fill carts.from what ive seen, you cant just drip right into the cart.