A Dimitri is a nice parallel box. If I were into serious cloud, I'd want one with a PEEK insulator rather than Delrin as PEEK will withstand higher temps, but that's a minor quibble. The reason you see cloud competitors use mechs is because mechs are required in competition. (I always thought they did that to stop some n00b from showing up with a DNA200 and blowing their doors off, but that's just a guess.) However, if you are not going to enter any competitions, you just want it for casual
vaping, a regulated is definitely the way to go. It's just way more powerful than anything you can get with a mech short of 5 or 6 batteries. The cloud those guys get is because they build better
coils than you, not because they have a more powerful mod. Also, because they are power limited on a mech, and are using massive
coils, they get huge ramp time (the time it takes for the coil to get hot enough to make vapor). That's why you see them push the button, wait a while, then exhale into the drip tip before drawing. No sense holding you lungs empty for 2-3 seconds while you wait for the coils to get hot, and blowing vapor out the air holes tells you it's ready. What makes vapor is power pumped out from the coil surface (mW/mm^2) in contact with wet wick. Savvy
Steam Engine? If not, go and look, then learn how to use the "heat flux" figures in the right-hand "results" box on the coil wrapping page. What you want is a lot of surface area-- that's why those dudes use Claptons and Aliens and pay out the Wazoo for Twisted Messes coils-- and then pump some watts through it. You can buy an RX200 from VapeNW for 10 bucks less than a Dimitri, too. Bear in mind, a .15 coil-- your lower limit-- is dangerous on a mech, and not too efficient. They waste a lot of power. Once you get below about .25 on a mech--
never try that on one battery, it'll blow; you need at least 2 to get under .4 or so-- voltage drop rears it's ugly head and you start to waste power instead of use it.