What is the best looking anime series/movie quality and style wise?
There isn't one
>>134763
higurashi when they cry
>>134773
what's that, the steven universe of anime?
>>134775
Yes.
If you enjoy stephen universe, you should totally watch it.
Kyoto Animation works are well known for being very well animated. Examples are Hyouka, Nichijou and Chuu2koi.
Style wise is hard to say since it's completely subjective.
>>134763
https://archive.nyafuu.org/wsr/thread/115133/