Hi tt,
I can't offer you a comment on the Axiom 60-ltr rear panniers, but I have had experience with two sets of smaller Axiom bags, the 40 and 30 litre sizes respectively:
1. They're quite well made and durable, and a good price. BUT,
2. On both of the sets I have used, I found a design flaw: The internal stiffening board proved to be not stiff enough for touring conditions -- load, distance, vibration. I had to add a metal strip across the top of each stiffener, and that required drilling and cutting, and meant extra weight as well. I learned about the limitations of the larger bags when I loaned a pair to friend for a 12-day ride from Ottawa to Halifax (Nova Scotia). I then found out that the smaller 30-ltr bags suffered from the same problem, after using them for grocery shopping :-(
3. No experience with Carradice products, but by comparison with the Axioms, my Arkel panniers are much better designed and built, and quite a bit more expensive. I have a full set of Arkel panniers, including the 42-ltr rear panniers; Arkel also offer a 54-ltr pair of rear bags. I've had no problems with my 42-ltr rear bags after several seasons, and friends with the big'uns praise them. I have only one reservation about the Arkels -- they're on the heavy side. And I have one 'what if?' question: "What if lived in a rainy climate?" If so, I'd look closely at Ortlieb -- some of their rear 40-ltr panniers are both waterproof and lighter than the Arkels, although Arkel now offer waterproof panniers as well. (The HD nylon panniers which I have require a set of pull-over rain covers.)
Hope that's helpful -- good luck. J.
