You said it. The Omnivap is largely titanium and titanium costs more. Maybe it's harder to work with. Then there's the adjustable airflow and the ti tip..... But, what you didn't say is that the Omnivap is a very finely crafted, precision milled, engineering beauty that has to be experienced to be fully appreciated. In comparison, the M is much more rudimentary in design. The SS Tip of the M has a more simple design with its thicker and fewer fins. The neck of the tip uses one less oring than the Ti tip. The convection ratio is higher with the Ti tip vesus the M tip. The integrated SS stem/mp while attractive and durable cannot compete with the titanium body and the sexy titanium mouthpiece. And then that mp threads onto the condenser like butter and because the condenser/mp are precision fit to fill and sit tight within the body, the Omni has a strength and integrity to it that tells you it will last a lifetime. Maybe two. The Omnivap should passed down to the next generation when the time comes. It's a piece of functional art. A device meant to be used and admired for what it is. The M is wonderful vaporizer as is every Vapcap in the line up. The Omni is just the top of the line.