I've been happy with my Altura Jura panniers - I've only done 1500 odd miles with them but they're holding up well. They've carried pretty heavy loads, they've got R&K click-fixing and haven't let any water in yet (I'm not going to claim they're waterproof though
).
Richard
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Currently riding an MTB with a split personality - commuting, touring, riding for the sake of riding, on or off road :)