Alright, glad you like the CE2 as much as I do! They're a little fiddly but once you've fiddled, I haven't found anything I like better on my ego.
I clean mine out every 10 - 20 refills. Just pop the seals out and rinse it out. Then it's just a dryburn: hold the button until you see the coil is glowing red. Keep holding the button with the coil glowing red while you gently blow on it for anywhere between 15 - 30 seconds (be really careful of juice/water splatters: I tilt the CE2 away from my face).
If you keep it glowing and let it cool down for a few minutes between getting the coil red, the wick will be almost pure white again and it'll be almost as good as new. If the coil starts to glow white hot, you're holding it down too long. Yellow hot is kinda as far as I go for a dry burn.
My CE2s I have now are all over 2 months old. If you care for them they're seriously strong contenders for robust heating elements.