Panniers - Racks - Bags - Bike Luggage

Your choice for good rack bags are:

Swift Industries Ozette Rando bag http://builtbyswift.com/shop/hinterland-ozette-randonneur-bag/
Ocean Air Cycles x Swift Industries rando bag: http://createfolly.com/ocean-air-cycles-x-swift-industries-redefine-the-randonneur-bag/
Inside Line Porteur http://ilequipment.com/products/velo-orange-pass-stow-rackbag
VO Porteur bag http://store.velo-orange.com/index.php/vo-porteur-bag-1625.html
Ostrich Rando bag http://store.biketouringnews.com/ostrich-f-104-rando-bag/
Acorn Rando bag http://www.acornbags.com/products/boxy-rando-bag?variant=21186581060
Zugster Rando bag http://www.zugsterbags.com/products/rando-bag
Ironweed Orpington bag https://www.velovitality.co.uk/products/ironweed-orpington-rando-handlebar-bag
Giles Berthound GB 25 https://www.velovitality.co.uk/products/gilles-berthoud-gb25-handlebar-bag-grey

IMO Xpac is the best combination of classic styling (it holds its shape well) and performance (it's waterproof, lightweight and tough) so I would promote the Swift or Ocean Air (which is the Swift but with some tweaks to design) but they're now too expensive due to #brexit. The ILE is the cheaper and more flexible choice with up to 42L carry capacity.

If you care about style and money is no object then it's the Giles Berthound every time, and you can laugh at anyone with anything else, they're amazing.

Now I happen to also be the oracle of front racks so ask me about that next :)

PS In this list I am looking for a bag that: attaches with minimal complication, offers accessible load while on the move and rider-facing pockets and would compliment a 2x front pannier setup for long rando/audax rides.