Acemer S2 Pro 48 Watt
I have the Acemer S2 Pro 48 Watt. It is an upgrade from a previous laser of another manufacture. The first thing I noticed was the quality and sturdiness of the frame. "It is a beast." The second thing is being able to move from normal to precise modes with a flip of a switch. Thirdly customer service has been great. I have contacted them twice on questions i had on assembling the unit. Both times response was quick with a video and written reply