6 years with seattle sport panniers, retired from commuting a year ago (went to green guru dutchy, if it is raining I bring it in with me) but the seattle sports bags still go on long gravel rides and overnights. I have what are now labeled titans. The zippper pocket is nice but not rainproof, the rack attachments are solid.
I had a seattle sports trunk bag for 7 years that ended up cracking where I rolled it up, but I was rolling and unrolling about everyday so I figured it was worth it.