Same here, except I use a TeePee interdental toothrush which cleans the inside as well as the outside of the coil. TeePees come in a range of sizes so whatever coil i.d. you're using you'll find one that fits. The advantage over a metal brush is they're less abrasive so there's less wear and tear on the coil, and they're also really good at removing any partially crystallized gunk from the coil because they are slightly absorbent. Removing the gunk from the inside as well as the outside reduces the cooldown time and thus extends the life of the cotton. I also find that fused Clapton coils cool down faster than an equivalent single strand.
I like the BPMODS ProVape 10g cotton because it comes in strings that are perfect for my preferred 3mm i.d. I change my wicks once a week and I never get burn-throughs unless I go significantly above 4V. Currently using a 32/2*24 fused Clapton that's been on my Serpent Elevate for three months and there's no flavour drop-off yet. The wicking ports on that RTA are perfect for the aforementioned cotton.
It's the combination of everything... the cleaning yes, but also the coil surface area, heat capacity and correct cotton size that all make for nice happy low-maintenance vaping.