Yes, the conquest is in a different league, very "non-cox" in its construction...
But I've started to like the Queen Bee when running it on diesel, it actually performs quite well and does about 4000-10400rpm on an 8x4 prop;
(I guess the Norvel .074 is even better on diesel though...)
http://www.youtube.com/watch?v=KLFfH1vQKSY