Sliding miter saws offer the advantage of crosscutting boards up to 12 in. wide while still providing all the benefits of non-sliders. They're available with blade sizes ranging from 7-1/2 to 12 in.
This recent project (multiple build videos below: part 1, part 2, and part 3) is a very flexible type of guided pull saw, whereby a fine ... he uses on the way. DIY tool builds are not uncommon ...