My biggest bowled pipe is a Johs apple, which I originally called a brandy until I saw the invoice, given to me by my wife for Christmas in 2010. It's not a monster, but easily a Group 6, semi-rusticated and quarter bent, a bit heavy to clench much. But when I have a long reflective session in mind, it's the go-to pipe. Runner up might be a Johs freehand tomahawk with plateau on the rim and shank, given me the same Christmas.