RE: X435 vs Y535
Yes pond conditions Do make a difference on pond conditions, No one prop will give you the best results in all conditions. As Boris said it's a good idea to have more than one prop to match the current pond conditions. The M435\3 will be a better prop in Breezy\Windy conditions to help keep the Bow Down going into the wind so you decrease the chance of a Blow over, and the Y535 will be a better prop on Slick Water.