Sculpfun is a relatively new brand in this product segment, and I was lucky enough to be able to test some of their engraver. I found the product extremely solid and well designed (which is what I love the most) with some details that make it particularly comfortable to use.
I suggest Sculpfun because it has the best price/quality ratio, here you can find my review.
In 2022 Sculpfun release a new model called Sculpfun S9 that use a proprietary “beam shaping technology” (a lens system) which produces a more concentrated and deeper focused laser beam, which allows for a cleaner and deeper cut, up to 15mm.
Sculpfun flagship model is the S10 that came with 10W optical power module and built-in air-assist system which make it very powerful and pleasant to use.