Some kinks, but once ironed out it works fine
I routinely perform on solo sax with backing tracks. Recently, I scaled up from a single powered loudspeaker for my backing tracks to a pair of QSC-K12's (which rock), and even some nice mics and a small mixing board for when I'm convening a jazz trio or quartet. I realized that I needed a cart instead of my collapsable dolly. I heard good things about rock-n-roller, so after doing some measuring, I went with this smallest and lightest model.
It arrived with the box intact, but with some minor quality control issues. First, on the large rear wheel axles, there are to be a pair of holes drilled opposite each other thru which one inserts a pin then you splay out the tips with pliers so it stays in place, and keeps the wheel on the axle. One of the holes was not drilled opposite the other across the axle, so Malaysian wage-slave decided to drill a second hole adjacent to the first, creating a figure eight super-hole. Not a big deal, since I could splay out the pin tabs one to each hole. After applying light grease to the axles as suggested, I found that one wheel will spin freely on the axle, but the other one has some resistance and will only do a single 360. Again, annoying but a mere trivial drag on operation of the cart relative to the heft of the cart fully loaded and gravity. Finally, one of the thick metal 90-degree tabs on the frame, that forms the notch to keep the smaller U-shaped handle in place in the upright locked position, was formed too narrow for the shaft of the U-handle to snap and rest all the way inside it. So, I had to apply tape to the tab to protect the finish, and use a large wrench and brute strength to bend it out slightly. Now, the U-handle will slap all the way in place into the notch when upright. I could get it done, but girly-girl shopper might need to enlist a strong set of hands to do this.
My first gig with this had me schlepping my stuff an unexpected half-block away at an outdoor mall gig, and the cart did the job fine. Now that its all good to go, I'm basically happy with it, and like others here, it strikes me as solidy-built, but hoping it will hold up over time- especially the wheels.