What's the biggest difference between the P1S and the X1-Carbon? I'm looking to introduce 3D prints into my existing business. So far everything I'm printing is using PLA. the A1 mini is great for prototyping, but if I want to make 150 units a month of something that requires the entire A1 print bed, and it takes 2 hours to print, that's alot of overhead just watching the printer and keeping it operational. In other words, the solution I'm looking for is either a larger print bed meaning more prints per human operator time or faster print times which translate to more prototypes for sale on my website in a given month. I also realize that 2 A1 minis are the same price as a P1S and I already have an A1 mini so I'm considering just buying 2 more A1 minis and having 3 running at a time. Interested to know what you think.