I have a Maui Sails Formula boom and love it. It's heavy, but bullet proof.
This boom is Phil McGain's baby - A few yeas ago at the US Open in Corpus Christi, Phil spent a good part to his time on the beach asking all the sailors what they liked and didn't like about their booms. I am sure that his research went well beyond this one event, but he simply took all the good points from existing booms plus his experience and incorporated them into the Maui Sails formula boom.
My boom was one of the first booms to be delivered in the US. Yes, the grip material is soft and it does tear up easily, but I am pretty careful with it and it still is in good shape after a couple of years. However, this problem was resolved according to Phil. If I choose, Maui Sails will ship me new grip material.