New panniers, what to choose?



I had some nice Wiggle Altura ones, which combined a roll-top sealing
mechanism with a storm-flap that closed down over it.

It seems better than the Ortlieb mechanisms, which just have a roll-top.
Are the Ortlieb Bike Packer models (which do have he flap, but no roll
mechanism to seal them) as waterproof?

Daniele
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