One piece of advice I would urge your brother to take. No matter what sought of bike he gets. Tell him to undergo some type of professional bike riding tuition. The number of newly rich wannabes who buy bikes to go with their new image then have killed themselves in Oz is horrendous. I did one after riding for 20years and I was stunned how much I learned. This course was run by the state and the instructors were volunteers. I have been recommending these courses to everyone I meet ever since. They weren't just for newbies either, we had people who had never seen a bike and others who had been riding for twenty years and knew everything(me)and all sorts in between all on the one course. It was brilliant. DO IT
Cheers

A dog, a bike, a ute, Now in the deep south.. Newcastle. Cold winters, cold rain Come on summer