The Protanks I have perform about the same as my evods (Protank has a more airy draw but I don't mind that so much, I get the same amount of vapor, flavor, and throat hit) but those two out perform my Novas by a lot. My friends use the T3s/MT3s and they like them. If it works for you, keep using them, that's all there is to it.
I have an RSST, an Igo-L and an Igo-W that I throw on my evic when I feel like show boating my set up, but I usually just throw my RBAs/RDAs on my Smoktech Magneto. I'm running dual coil cotton wicks on my Igo-W at about 2.1 ohms, my Igo-L is running at 1.6 ohms with a 3mm silica wick, and my RSST is running micro coils at about 1.7 ohms on 325 SS mesh. And like Jizzles said, the RSST is a juice destroyer and it drains the battery quite fast, even when I use the green 3400mAh Panasonics.