Depending on how you drive, the type of journeys you do and the front axle of your forks it may be worth looking at the 561.
With 15mm or 20mm axle for they’re a more secure solution to the 591/8 and you’ll have less junk on the roff of the car (if they’ll be permanently fitted), I have both and find the 561 easier to load, the bike wobbles about less and is more secure for longer journeys/motorways/fast A and B roads. Also if you have cables running down your down tube the 591 can crimp/rub these if not careful.
There is the obvious faff of fitting/removing the front wheel pre/post ride with the 561 and if you have multiple bikes with different fork axles it is a pain to switch between mounts so better to go with a 591/8.