I tried both, using multiple devices as well as lots of different ss coils, from simple single round and flat wire to Clapton, fused Clapton, staggered, staggered and fused, juggernauts, you name it. Would run them mainly in power aka watt mode, because most of my mods would not regulate tc correctly, giving me all kind of nightmares. However in power mode, I'll noticed that it was difficult to get the right setting, even just an increase of 1 watt would result in either being to cold/hot, dry hits, burned cotton, wrong juice flavors etc.
Now I'm not trying to promote a specific brand, but it wasn't till I picked up my hohm wrecker g2. I now do not use any tanks/coils/rebuilt able in power mode anymore. Everything runs in tc, including wires not meant for tc, and I love it. Not only can I pick different ss modes, I absolutely fell in love with the xxx mode. I wish somebody would have sold me that mod as I started out, I would have never bought all the smok, sigelei, joyetech etc mods that are horrible with their 2 maybe 3 ss presets and couple TCR possibilities.
Anyways all I'm saying is, the mod matters when it comes to tc, and the experience. Just try urs and see what you enjoy best, mods/tanks/coils/rebuilt able/watt/tc mode/regulated or unregulated is just like ejuices and flavor, it differs with each person.