Originally Posted by !<-_->!
Yea. My impression is that either the Wilson 15 or a Head Monstercombi would be largest. I just picked up a used Wilson 15, but the quality I'm not too keen on. Seems a bit flimsy.
Federer's 2013 Wimbledon Limited Edition 15 pack bag has a shell-like quality for the two exterior panels to protect the racquets. And they do manage to keep its shape. But it's pretty expensive.