Well, you will be happy to know you can put your own liquid in any e-cigarette, including the dse-901, dse-801, pee wee, or any other variation. Just drip the liquid onto the fiber inside the cartridge.
The maintenance issue is more complicated. It depends on how often you smoke and how you smoke. You can extend the life of your atomizer by placing it in a cup turned cartridge side down at night while you sleep. Batteries are tricky. I have my own home-made battery pack that i soldered together with a battery connector.
Think about it this way, the larger the e-cig you buy, the more durable and long lasting it will be, and the more vapor it will shoot out.
IMO the best compromise of price/performance is the dse901 or dse901b. I'm on two weeks on two of my atomizers with no signs of stopping. My batteries get less use now because i made my own battery pack, but they last for several hours also. Overall, e-smoking is cheaper, but there is a bigger initial investment. For about a month plan to spend about as much as you would on cigarettes, after that it will be considerably less.
When you buy a kit make sure to buy an extra atomizer, at least a 10ml bottle of
juice (start on about 11mg) and an extra battery if you can afford it. That should be all you need for about a month besides 1 or 2 more 10ml bottles of juice (about 9.99 each).
So
50.00 dse901 starter kit
10.00 10ml bottle of juice
10.00 extra atomizer
10.00 shipping
~$80
I buy my stuff from steve at
PureSmoker.com - Your #1 Source For ECigs, Parts, & Accessories!. Good luck!