I had a lot of trim to cut and fit for a remodeling project I just finished today. The old maple mitre box was getting a bit worn after
20-30 years so I shopped around for a new one. I found a Stanley, model 20-800, at the Home Depot for about $50. Very impressive looking machine. The saw looks like something you'd find in a surgical suite and it has a couple of clever cam clamps to hold the piece firmly, always a problem with the old maple boxes.I was very impressed with the machine as it made the job a lot easier. Just thought I'd pass this along for anyone shopping for a mitre box or contemplating a project with a lot of angle cuts.
Disclaimer: I am not affiliated with Stanley Tools, Home Depot or much of anything, actually.
Paul