You make some good points on which companies printer to choose... I sure hope the printer rules in the USA dont spread here. We dont need more laws restricting what we can and cant do with our hardware !!
Yes good point about multi-colour on the Anycubic Kobra X. Its currently my fav. Bambu Lambs A1 seems to have the bigger community and better support.
For Under £350 they both seem get rave reviews.
Photogrammetry stuff exists but Im not sure its simple enough to get accurate models, thats where LIDAR comes in. Saying that the S20 series had a type of LIDAR and could make 3D models.