A60-M w/ 20x12W is about 28 oz, A60-S w/ 18x12 is about 23 oz. Considering we no longer need to carry 8 amps worth of lipos uphill and dynamic braking is now available from from the ESC to kill airspeed downhill, I see little use for the huge diameter prop - unless there is some benefit to stork landing gear and increased gyroscopics that I am missing.

Regards,

Dave Lockhart