I have used both on my bows with little to no complaints. The WB is a nice full containment rest but you do loose a little arrow speed, somewhat insignficant in many cases, and it does damage vanes until it is broken in or you trim some of the bristles.

The Trapdoor is very compact with no linkages, etc.. so it is a breeze to initially setup and tune. However, though I personally have not experienced it, several others have reported that they just stop working at the most inopportune times.