Hi Art,
Found a Forum on Ryobi, and users are not happy with the the Ryobi. Uses bushings instead of ball bearings. It seems to be built similar to the Boesch trannys we used a few years ago. Found the price on the drill motor/tranny assembly as well. $92.66 is steep compared to Dewalt's needle/ball bearing output shaft. I would keep looking, but the Dewalt's will be hard to beat.
Link to forum:
http://209.235.218.9/dc/dcboard.php?...g_id=806&page=