I am currently looking to purchase an industrial AM machine. I have looked at companies such as 3DSystems and Stratasys, but am looking for a plethora of competitors in this industry. I am looking for relatively large size bays that can print strong materials with good tolerance +- .001". Has anyone had experience with any of these printers?
3D Systems MJP 5500X
3D Systems ProX 800 SLA
Stratasys Fortus 450
Prodways Industrial Printers

Any recommendations would be a big help.