Upgraded from the Kingsong 16X to the Sherman-S. I bought both wheels from eWheels about two years apart. As far as the wheels go, both have been flawless. The upgrade is like going from a Honda Civic to a Mercedes G-Wagon. What a huge jump in comfort and performance. I couldn't be happier with my decisions and eWheels are the reason. Initially (2 years ago), I wanted the inMotion V11 but it wasn't available when I was purchasing my first wheel. Jason mentioned the 16X and its comparative performance - albeit without suspension - and I bought it instead. Loved it for more than a thousand miles and now it has become my brother's first wheel. Next, came the Sherman-S. I purchased it from eWheels without hesitation based on my previous experience. All of my questions were responded to very quickly and no email went unanswered for more than an hour or two WITH a three-hour time zone difference, regardless of the time of day I sent the email (within normal business hours and I am in the Eastern Time Zone). For example: In my anxiousness, I emailed a question at 8 AM ET one morning thinking it would be one of the first emails they might respond to around 11 AM ET. I received a reply in an hour, which would have been 6 AM in eWheels time zone. There was a shipping delay with the Sherman-S, from China, and Jason was super communicative and made the waiting period completely bearable. My experience has been that this company is next-level with customer service. I received shipping updates, shipping label creation updates, emails describing the wheel and linking me to electronic versions of documentation, videos and even safe riding recommendations. If I had never sent a single email to them full of anticipation and questions, I would still have received at least 5 emails from them as previously described. Fantastic customer service! I am looking forward to purchasing from them again when I'm ready for another wheel. I can't imagine anyone providing the service, communication and remediation they do so I'd consider myself an eWheels customer for the rest of my life in this hobby. My experiences have been stellar.