I have the Bosch Glider. It replaced a Bosch 10in SCMS which only beveled in one direction, and was direct drive, so it could not cut 4in stock in one pass.
I love the machine. The dust collection is "better" but still generates a good amount of dust. I think this will be the case will other mitre saws.
The articulating arms do feel to glide.
I like the fact I can keep the saw parked close to the wall on my bench so the swivel locking screw does not protrude too much.
The previous saw I had to move forward for use, and then push back for storage to avoid my hitting the swivel locking screw.
My shop is a garage and so I am constrained for space.
The saw makes nice smooth cuts. The fence has split level adjustments. The base extends.
I do not know how it compares to other manufacturers. I liked the articulating design, and I like Bosch tools which was enough for me to pull my trigger.
You can likely see more reviews on the purchasing sites like Amazon etc.