Well, I get them wholesale at twelve cents each, so I'm not sure it's worth my time.
Is it true that I couldn't do that with a non-Kanger vaporizer?
The basic stuff is going to variations on a similar theme. An Aspire BCC isn't going to be any better than a Kanger when it comes to coil longevity in context of your liquids. You could try cartos or carto tanks, but I'm betting they won't last any longer than what you are experiencing with a Kanger clearo before the performance craps out and you have to replace the carto.
Backing up and looking at the total picture of what you are asking for, head over to the Reos mods sub forum and take a look around. Reos Mods
This isn't going to be cheap - around $230+ for a complete setup. But the PV itself is pretty much indestructible. Any part that could be broken on it can either be replaced yourself or sent back for repair. This is not electronic - there are no displays, switches, settings. When it comes to operation it's as simple as it can get.
You will be topping that with a Reomizer rebuildable atty from the same place. It's one of the simplest RBA's to put a coil into because it's so plain and the work area is very open. But to do that it still involves wrapping a few turns of wire to create a coil and using a small screwdriver to fix it into place. Then you create a small wick out of ordinary cotton and feed it into the center of the coil. With that setup if the wick gets mucked up you can just pull it out and replace it. You can still dry burn the coil as needed. Since the coil and wick are independent - you toss/replace the wick when it's gone crappy and dry burn the coil with no wick in place - some people have gone months using the same coil.
What you would get out of this combination is much more flavor than from a clearo and a much less fussy device. Your maintenance costs would come down to a box of cotton balls - to build enough wicks to last 10 lifetimes. And the cost of nichrome wire to make the coils.
Best place to get a look at the mods is right at the web site: reosmods.com
What a Reomizer is, and how you build a coil & wick for it here: http://www.e-cigarette-forum.com/forum/reos-mods/413000-rm2-rba-2-0-reomizer-2-rebuild-tutorial.html
There are a few other points about it - batteries to use, how it feeds liquid - but this should be enough to give you an idea what it is. If you absolutely hated it you could sell it in the classifieds and only lose about 20% over what you paid. They hold their value very well.