There is a new prop design out by power shift it’s called the Falcon. It performs better than the power plus series did. I have yet to see anything by Whirl Wind impress me. The only thing I think is great about a Whirl Wind is they can handle a beating from cans and tools going thru them but I do my best to prevent that from happening so I have no need to run one. I feel that Power Shift for a car motor boat is best prop hands down and Sensenich is the best for an aircraft motor. Also Sensenich really stands behind their product.