U1

Haven't tried changing spools mid print. Not having purge is great, multicolor is 50-70% faster and cheaper. To this regard, machine is great. I have both Bambu and the U1. U1 build quality is good. Not super great, but very good. Prints quality: they are very good, but not super great. Where you se

Snapmaker U1 was nice price wise, but can't handle more than glorified corn and melted plastic bottle filaments. If the H2C is closed and actively heated like the other variantes, man it's going to be ages in front of the others. Prusa XL must be freitened.

Textured vs smooth plate: mostly comes down to what kind of finish you want to see on the bottom of the print. Textured in general looks better for single-part prints, but if you're printing something that will have to be assembled, smooth can give better results. Adhesion is similar, with textured

If you intend to do a lot of TPU then my understanding is that the C5 is easier to work with for that, however I could certainly be mistaken, but definitely something to look into. As for comparison and actual in depth reviews, with technical comparisons, I'd say you should still look at the videos