ORIGINAL: Angus B
If you want awesome pullout on a 16.5lb plane you will need more than a 50, or else you will need to pipe it. My Vision is 15.5lbs with a ZDZ 50, pullout is good but not awesome.
Quoted power of DA 50 is 5bhp and ZDZ 50 is 5.7bhp
Angus
Trust me, the DA has better performance on the airplane than the ZDZ.