I bought a new Sonor SQ1 set earlier this year and was really disappointed. Turns out it was actually manufactured in September 2017. So it was unsold stock that had been sitting in a warehouse for years. Chrome was rusted, the rubber mounts were discolored, and even the bearing edges were rough and uneven in places. I could have overlooked all that if the drums sounded good, but they didn’t! I am familiar with the sound of SQ2s, and the SQ1s weren’t even close. So I carefully packed up the whole thing and shipped it back to the retailer. Luckily they refunded all my money including shipping. That was a very disappointing and stressful week!