I have the SW Motech quicklock racks you mentioned with Pelican 1550s. They are quite good. The pelicans need no introduction but the quicklocks are great for me. I like to ride where I'm going, remove the rack/bag at the same time...in 45 seconds for both sides. Go back on in 1 minute (for both). So I can have my cake and eat it too. They look good, even with the tabs left on for quick connection, and the bags are freaking bolted to the racks with bonded sealing washers each side and 1/4" hex bolts and nylock nuts. I've been through utter downpours with no leakage and dropped the bike on them several times. Think about riding at the end of the day without those giant hard bags - it feels like a dirtbike again in 45 seconds.