Oppo’s 21x9 feature really wasn’t a big deal to me when it was released. It is now. My RS520 locks with 4K/60 and I’m dead in the water when it comes to streaming online content and having aspect control, whether from Netflix, Amazon, YouTube or others. The 21x9 fixed lens feature is huge. It’s so nice having the Oppo default to the 4K 16x9 screen for menus of all sources when shutoff. I’ve always preferred my Oppo remotes over my iRule or harmony hub control for control of the disc. And now it handles all my scaling too. Pretty sweet. I got permanent thumb drives for trailers and cal patterns. Really makes things simple. If you run a fixed lens setup give it a shot. It’s a killer feature that can save you some major cash.