I agree with you Aardvark if I had known of the Two Trees product and what core xy was when I was buying my machine I would probably have bought the TwoTrees unit. Having said that the reviews of the machine on their website indicates some pretty pore QA. And the only under $300 unit I can see is form BangGood at £206 and £265 inc an enclosure. and I am not sure of BangGood if there were to be a problem. Haviing said that when I need to put another machine on line I will certainly look at the Sapphire core xy.

Incidently that said the Ender 3 pro is doing splendidly working much of each day making parts for our designers.