I have never gotten more than a week to 10 days out of anything, and that goes back to the days when I was using atty's with carts, carotmizers, and carto tanks. I never dripped. Now is use DID clones and Aga T2's (have some Krakens on the way), and Eternity's and BC's when I am away from home which is often. I need something that I can rebuild/swap out quickly when travelling without tools. I am a medium ohm vaper at around 8-12 watts, depending. Just starting to get into mico coils, but I still will not go too low in ohms since my vv mods just cannot handle it.
I DIY my juices and chain vape which might be part of the problem for my short coil life. I really envy the guys who get a month out of a coil.
Well if any of us could go that long without the urge to tinker I'm sure we would all get several months out of a coil. For the price you pay for one Protank I would have multiple years supply of wire and cotton. I'm just saying.