My upgrade path matched yours only my K-40 came lightburn compatible. I really liked my k-40 but it was just to small. My diode laser was a total bust. The support was helpful but I just couldn't get it to work correctly. The Monport K-40 came with chiller that didn't increase the cost much. The 16x24 60w is a 100% win. It came with auto focus and I didn't need to adjust anything. I checked the Laser alignment and it was spot on. I love that machine very much.
I think I would use your advice/experience and will try to get bigger machine (well looking for something up to 2028) ;D for now I am choosing first laser but those k40 seems very limited and probably bigger worth the investment. Thanks for sharing.
