Is this a good buy? Please share your experiences with this.

Lumenis Qx Max is a great laser with no service issues to speak of like screens, fibers, arms this laser is built to last.
Highest peak power of any laser including the Pico. Peak power which is the the combination of power and speed are the marker for a best tattoo removal then wavelength. Do the math with the Pico laser and you will find the peak power is much lower than most devices on the market with only one wavelength. Same issues as all 755nm tattoo removal laser. Will not remove Black very well and Red ink at all the two most used inks in tattoo removal by far.
A true 1600mj system in 1064nm with additional 532nm, 650nm,585nm.