Aaahhh... Not quite. Mech mods are used in cloud competitions because the rules require them. But regulated mods are far more powerful these days and, in the hands of a person who knows what they are doing, make more and bigger cloud than you can get out of a mech. I have a number of mechs, and I love them; I use them every day. But they are today become a niche market. As regards the price variation, in general you get what you pay for; and sometimes what you pay for is the brand cachet. I, for instance, have never understood why anybody would buy a BMW when they could buy more car for less money in the Audi brand. But BMW sells a lot of cars. In general, branded mechs offer better quality than the clones. Sometimes you can tell this in using them, other times not so much. One thing I will tell you for sure: you can get a lot more power, more safely, out of the Smok M80 than you can out of any two-battery mech mod, even with the best batteries in the world. And if a cloud chucker is what you want, look at the Snow Wolf or the Sigelei 150, something along those lines. Bear in mind also, most people do not like to vape at power levels much higher than you can get out of your Subox because the vape gets very hot very quickly. I have a Snow Wolf 200w machine. I run it at 65 watts with my Dark Horse dripper with the chuff cap, and it is a steamthrower. But if I run it at 70 watts with the same rig, it burns my mouth and blows boiling hot juice pops into my throat. Now, all that's for what it's worth. But be careful of mechs. You really have to know what you're doing to use them safely, and getting a mech coiled so it works well is often a frustrating challenge as they are finicky about such matters. If you really want to use a mech, be certain to buy good batteries from a reputable vendor. I never use anything but authentic Sony VTC4s in mine.