I love seeing opinions on what ride to run, and WDWMagic has a forum thread on picking Buzz Lightyear’s Space Ranger Spin in Magic Kingdom vs Toy Story Mania in Hollywood Studios: https://forums.wdwmagic.com/threads/buzz-lightyears-space-ranger-spin-vs-toy-story-mania.972862/ .
I love both rides, but in my view Toy Story Mania is essentially a mandatory ride to run. It feels new, the “cannon” seems to be more accurate, and the variety of small games being played keeps the attraction fresh. I really like the Space Ranger Spin waiting area, but the actual ride always feels a little short.