I normally wouldn't reply to this thread - I'd rather leave it to those with more experience than I. But, I just finished cutting about 110 braces for my own timber frame and thought I'd pass along my experience.
I used a 12" RAS for most of the work.
As Daiku mentioned, the cheek cuts getting a little intimidating. I screwed 2x4's to the saw table which outlined the path of the blade. I covered those with a scrap of plywood, which prevented my hands or clothing from possibly contacting the blade. It was a little extra work, but I felt a lot safer.
I used the RAS to cut the stock to length, cut the cheeks and shoulders of the tenons, and then to backcut the tenons. I fastened guides and stops to the table, so I didn't have to measure and mark each piece.
I then cut a curve in a piece of 3/4" melamine, to use as a template, using a router on a 12' pivot arm. (there's a better name for that, but it's escaping me at the moment.) I used this template to draw the curve on each brace, a 14" bandsaw to roughcut each curve, and a spindle shaper to trim each curve to the template. I then sanded and used a router to bevel the edges.
I spent about 5 weekends doing all this, which I guesstimate works out to about 45 minutes per brace. Over half of that time was used to cut the curves. This past weekend I spent 11 hours just sanding and beveling.
