The burned out motor was totally my fault. I'd never dealt with a canister filter before and since I bought it used, it didn't come with a manual or anything. I found one online, but it was kind of hard to understand (for me at least). Their customer service was INCREDIBLE, though! I emailed them first with what I thought the problem was and they walked me through the priming process in a way that made sense. Then, I emailed them two or three more times when what they had told me didn't work. Finally, I emailed them and asked how much it would be to order a new motor unit since I'd accidently burned out the original one. I made sure they understood that I had bought the filter used, so it wasn't under warranty anymore. They asked me for my address and two or three days later I had a brand new motor unit sitting on my doorstep.
The casing is a little flimsy compared to the Via Aqua 750 Professional I have, but the Cascade was MUCH easier to prime (STILL haven't gotten the stupid Via Aqua to prime).