Get an Acme prop. http://www.acmemarine.com/html/propelers.html
Do a search on this board for prop messages and you will see tons of guys recommending the Acme hands-down.
Got one for my Sanger V210 when the stock one got bent. Call Acme up and they will ask you a bunch of questions about your boat and what you want out of the prop (type of boating, wakeboarding, riding w/ ballast, how much ballast, top speed, your current RPM @ top speed, etc.) and they will tell you exactly the prop you should get and what your boat will be like with the Acme relative to the stock prop.
I took their advice on a prop despite the fact that my local "pro" marine mechanic had no experience with guys switching from 4-blade OJ props down to 3-blade Acme.
I couldn't be happier with the prop. I didn't actually lose any top end since the lower pitch prop I got actually lets my engine turn a bit higher at WOT. And I got better hole-shot for quicker starts when loaded up with people and ballast.
Hope that helps.