Re: [stitch] Original Troll MDV vs. Troll DW MDV
The Troll DW has the P-MDV (Penta Mono Directional Valve) system. The P-MDV introduces a larger sized valve on the center cell (there is no center cell valve inlet on any other BASE canopy on the market, including the standard Troll MDV). The outer 4 valves openings are slightly smaller. I believe the total valve area is intended to be the same (I haven't measured it, but I recall Stane telling me this at Bridge Day several years ago when he was showing me the prototype), just re-arranged.
It's my opinion that the valve on the center cell yields a cleaner pressurization, and should contribute to better opening heading.