I haven't been a big fan of CE2's, mainly because of all the fiddling you have to do to keep them from burning the silicone plugs and to keep them wicking right. That sounds like the problems you've had. They also never worked that great for thicker juices like I usually use. So, I ended up using CE3s, with the bottom coil. But they have their own drawbacks.
HOWEVER.... I recently broke down and bought a box of XL sized Fluxomizers. So far, they've been working better than any other CE2's I've tried. You don't have to fluff the wick, or trim the plugs, or flip washers over or any of that stuff you always had to do with older CE2s. If you want to give CE2s another try, I'd recommend trying the Fluxos. They've just about got these things perfected and you can use them straight out of the box. If you're using thick juice, you still might have to give it a tip now and then when it gets low, but it doesn't get any worse just because you used it for a day or two. And they don't leak at all, so tipping it is a no-risk affair. I can vape in bed without getting juice in my mouth.
Make sure you get the newest version of the Fluxomizers. They've changed the design and eliminated the burnt plastic taste that earlier ones had. Gotvapes has them, and probably somewhere else as well, but that's the only place I know for sure has the newest design.