I am pretty new to solid cam myself. I have tried the trichoidal option in a pocket, I wasn't that satisfied with the results. I have seen this stategy applied on videos at trade shows and it is verry fast. The code that I generated using solid cam was verry slow. I think the examples I have seen elsewhere dont use circles, or use a different feed rate for looping back into the cut (when not cutting). In a circular shaped pocket (nice rounded corners) a contour strategy with a small step over achieves an almost constant approach angle allowing you to ramp up the feed pretty high. I tend to do this now, as it seems there is much less air cutting. I would like to mount a chunk of Al in the vise and spend some time playing with the radius and step over values in the trichoidal options.