That's an easy one for me: A SCMS on a mobile base (collapsible type). If you do any carpentry work like decks, sheds, trim on the house, etc, the SCMS is a great jobsite saw. That and a circular saw with and edge guide will do about all you need. Inside the shop, it is great for miter cuts and cutting stock to length, and can be rolled off to the side when not in use.
The hard part is finding a SCMS that makes reliable repeatable cuts, particular angles and bevels. With almost any brand you have as many that swear at them as swear by them, particularly as to the accuracy on the angled cuts. I have an old (10+ yrs) 8 1/4" Craftsman SCMS. The slide assy/mechanism is very well built and is still holding true to good accurate cuts. When it dies I will probably look for a 10", as it seems the smaller ones don't have as bad a tendency to rack out of alignment.
JMTCW
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