Just saw this:
http://www.infinitytools.com/Festool-Kapex-KS-120-Aluminum-Miter-Saw-ZCI/productinfo/100%2D350/
More expensive than the betterly, but the replaceable inserts could make this cost effective if you use multiple blades or bevel angles.
Looks like the same idea as the Sawstop ZCI, but can't tell if it is made by the same guys.
http://www.infinitytools.com/Festool-Kapex-KS-120-Aluminum-Miter-Saw-ZCI/productinfo/100%2D350/
More expensive than the betterly, but the replaceable inserts could make this cost effective if you use multiple blades or bevel angles.
Looks like the same idea as the Sawstop ZCI, but can't tell if it is made by the same guys.