Don't take this wrong but, If your hitting the Boards enough to BEND Rims/Wheels, you will BREAK Wheels made out of stiffer materials (I have MUCH experience in this matter)
I actually think that Dish Wheels have less reinforcing ribs on the inside, than most Mesh Wheels and therefore will bend or Break easier if slapped on the boards. A Bent wheel will finish the race. A BROKEN Wheel will not. Something to consider.