Looking for best time stretching for pt in 2021

[ejsongs]

Looking foo Best time stretching in 2021 for pro tools:

Pitch n Time 3
X form
Zplane elastique
Waves Sound Shifter.

I currently own xform and Sound Shifter. Xform takes forever and a day. Looking for best sounding with zero artifacts. Mainly for changing tempo on background and lead vocal tracks, changing tempo on my mastered mixes before uploading to streaming services and time stretching loops with tce tool.

Elastic audio is cool for certain things but can leave way too many artifacts. Is it worth investing in pitch n time 3 pro/le or elastique or maybe both? I just want great results and as much as I rather not bite the bullet I will if I have to.

Thoughts?

Thanks,

Ej