What's the best Panniers to use?

Hi, I'm new on here and looking for advice please.
After 7 years of umming and arhing (if they're words) I've decided to cycle JOGLE next year. I'm no "tour de france" cyclist but do enjoy going out. I plan to take in the scenery and only cycle approx. 60 miles a day. So, I'm wondering what panniers to get for my bike, I only want to take enough stuff for a week, then have a laundry day. If anyone can help I would be very grateful.
Thanks
After 7 years of umming and arhing (if they're words) I've decided to cycle JOGLE next year. I'm no "tour de france" cyclist but do enjoy going out. I plan to take in the scenery and only cycle approx. 60 miles a day. So, I'm wondering what panniers to get for my bike, I only want to take enough stuff for a week, then have a laundry day. If anyone can help I would be very grateful.
Thanks

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Marin Palisades Trail 91 and 06
Scott CR1 SL 12
Cannondale Synapse Adventure 15 & 16 Di2
Scott Foil 18
Whichever you choose be aware that both suffer with problems with the mounting clip to attach them to your rack.
Curtis 853 Handbuilt MTB, XTR, DT Swiss and lots of Hope.
Genesis Datum Gravel Bike, Pacentis (again).
Genesis Equilibrium Disc, 105 & H-Plus-Son.
Mostly Steel.