Montana Rocker Pan vs: Wooden River Rocker

[Sluicedog]

Anybody or group use a side by side comparison of a "Montana Rocker Pan(aluminum) and a Wooden river Rocker? I used a wooden RR all day and sifted about one cubic yard of sand/rock/gravel mixture. I was impressed by the speed. I used my 4' sluice next to it and fed about 3 shovelfuls to the rocker to 1 shovelfuls to the sluice. They had about the same ratio of black sand to gold at the end of the day.-SD