None. Blue is the new version. Am very satisfied

The only difference I could see is the colour. The blue version is probably just the same colour as the larger presses. With the larger presses, however, there are differences between red and blue. The blue versions are a further development.

The colour😉

I've had both, but the red one had a lot of problems with heating and went into unusable error mode. Digitec have kindly exchanged them on 2 occasions. Finally, I've got the blue one and since then I haven't had any problems. I think it's the new version.