I prefer Netflix
It is easy to access, I use it alot on my phone.
Otherwise I also love Disney+, mostly because I love going down memory lane and I can find most of my childhood favourite, that you can't find on Netflix.
I think it really depends on your vibe and what's coming out from them that you're more interested in
And like is there someone you can watch stuff with for the other one
Like I can see prime stuff with a family member or Disney with a friend, so if I had to pick. Probably netflix.
Also because I'm obsessed with the animated movies there