Good idea.
If you wanted advice on those, I use the ortlieb trunk bag... not sure i'd buy it again. Great that it's waterproof but it's not got the best opening/accessibility, and the hard plastic base means that if you've got a pump and a multi-tool in there you sound like you're carrying around a big rattley box of lego! Very good for getting on and off - just a push button mechanism.
The ortlieb back roller plus panniers that I use are brilliant though. Costly but you get what you pay for.
Best of luck with your choices anyway, and enjoy the CX when it comes.
If you wanted advice on those, I use the ortlieb trunk bag... not sure i'd buy it again. Great that it's waterproof but it's not got the best opening/accessibility, and the hard plastic base means that if you've got a pump and a multi-tool in there you sound like you're carrying around a big rattley box of lego! Very good for getting on and off - just a push button mechanism.
The ortlieb back roller plus panniers that I use are brilliant though. Costly but you get what you pay for.
Best of luck with your choices anyway, and enjoy the CX when it comes.