I use Ti 26g on DNA40 with TC mode, ohm locked around 0.30 ohm and Temp set to 350~420 F.. So far it is nice and very clean taste.. I really like to replica these setting into the DNA200.. maybe i'd already adapted with this DNA40 behaviour.. I use Ti with the default profile of Nickel but the feel is still not there.. Don't know where is my problem, is it the Preheat power, Preheat punch and preheat time limit play a big role here? FYI, i just swap my vt40 with vt200 with the guys advertised in facebook..and many more like to swap their dna200 with vt40 no other cost involve.. as i have one of dna200, now i know why..this mod need very advance user..