Agreed. I've tried a lot of devices, wound all kinds of coils and experimented with various wick materials. I've got a genuine kfl+ and some others that perform pretty well but now gather dust for the most part. I've been an electronics hobbyist for decades and I'm about done for now with the hassle of building coils when there are now factory built stock coiled devices that perform quite well for relatively cheap. That relatively cheap factors in my time and labor. Just pop in a new coil or carto and go is my preference.Don't get me wrong, but I think this snobby myth needs to die. I come from the exact opposite point of view. I started out with single coil Kangers and kept hearing all the hype about building your own. So I got a Magma and Omega and built just about every fashionable kind of coil (I didn't bother with RTAs, since the snobs told me that drippers are soooo much better). I tried all the various wicks (organic cotton, rayon, etc.) and I was kinda happy, since they were in fact better than my Kangers. But then came the dual coil Aspires and Kangers and I tried them and was so pleasantly surprised that my drippers and Kanthal and cotton are now gathering dust. Now we have the next myth about the BVCs being so much better than the older coils. I would like to see a blinded study in which all the gurus are given various veiled devices with the various coils and heads and then identify which is which correctly. I bet they will fail.
Sure, tinkering is fun and I'm not by any means knocking it. If that's your thing then knock yourself out. As for me there's enough good performing off the shelf toppers and parts out there now that I'm done winding coils unless forced to do so by the intervention of corrupt government in the ecig market. I'm more into flavor than producing massive clouds. I see no advantage other than bragging rights to producing massive amounts of vapor at the expense of flavor. I've never had any device at whatever resistance firing at higher than 17 watts.
But I'll leave open the possibility that my mind could be changed by a new product topper. Ecig equipment has changed so dramatically since I started that's it's hard to remember the 'bad old days' now.