First of all - everything is IMHO
There is two kinds of laser owners here - first is LASER-BUSINESS and second is LASER-HOBBY. If it's necessary do 1-2-3 jobs like on picture - it's HOBBY and Chinese laser can do that.
If John want make business - I afraid business with Chinese lasers will be problematic. Reasons:
1) Software. Very often output dimensions are not the same as file dimensions. In jobs like inlays this is important.
2) Size of laser dot. Optical components (glass tube, mirrors and lens) give on table laser dot bigger than RF laser.
3) Mechanical precision. If precision usually is OK from beginning, on many Chinese lasers precision goes down dramatically after first 3-6 months.