Joined: Aug 2010
Posts: 12,717
Likes: 2,104
From: Madison, WI
Bikes: 1961 Ideor, 1966 Perfekt 3 Speed AB Hub, 1994 Bridgestone MB-6, 2006 Airnimal Joey, 2009 Thorn Sherpa, 2013 Thorn Nomad MkII, 2015 VO Pass Hunter, 2017 Lynskey Backroad, 2017 Raleigh Gran Prix, 1980s Bianchi Mixte on a trainer. Others are now gone.
If you go with the Ortlieb with rail, another advantage is the ability to shift hook positions for different racks. Just last night I was moving the hooks on my frontloaders to go on a different rack than I used on my last trip. The panniers with hooks riveted on are always a frustration to me when you can't move the hook positions.
Before you buy, estimate your total price of hardware with shipping and then compare to a new set of Ortliebs. You might decide to upgrade instead.
I just checked, the three different places in Europe that I have bought Ortlieb from before are currently not exporting Ortlieb to USA, so you unfortunately would be paying the higher prices charged in USA.