Dakine also make some very high quality packs. I use the Drafter, which has plenty of internal pockets, 3l water in seperate compartment, helmet carry and straps for armour/pads or extra clothes perhaps. Plus you can always squeeze an extra layer inside the bag despite having a banana, all your tools and full water bladder. They also have a size up for all day touring and a smaller version.
Their bike travel bags and gloves are also superb.