Hello Magnolia - The Q900TS has features that are not available on the Q900R. They inlcude
Infinity Screen (Customers can immerse themselves completely with the near-invisible bezel and 99% screen-to-body ratio that lets you focus more on the pure picture without the distracting black bezel)
Object Tracking Sound+ (OTS+) (OTS+ is an AI Sound feature that uses the arrangement of six speakers strategically placed around the TV to move sound in a manner consistent with what is happening on the screen. This allows viewers to see action, where it is happening)
Active Voice Amphilfier - (Artificial Intelligence optimizes dialogue volume when background noise becomes distracting)
Q-Symphony (Q Symphony allows TV and Sound bar speakers to operate simultaneously for better surround sound and immersion. The TV’s top speakers, a richer surround effect is created, while the sound bar delivers multi-channel sound and powerful bass. *Q soundbars)
Digital Butler (This instantly detects, connects and presents all your devices around TV including not only new but the old gadgets and appliances without you having to open up a single app.)
Tap and View (Customers can screen mirror on TV by tapping your phone. This practical sub feature lets you use both devices simultaneously- Galaxy S7 and newer)
MultiView (Workout while checking your posture using your camera phone-Watch walk-throughs while playing your favorite video game-Watch live game scores and reactions while watching the game-Compatible with Airplay and Ios. With most any phone you can enjoy Mobile View)
Ambient Mode PLUS (In 2020, more content:9 Categories including background with 102+ Contents Newly added 'Ambient Vibe' and 'Routine'Improved 'My Album')
These are the updates this year compared to last year. Picture quality will play a role too. Please check them out at your local Best Buy. ^Cris