I have 2 skilsaw worm-drives plus a Makita cordless. I prefer the worm-drives over any other circular saw period. Very difficult at best to "bog" these down. The drawback to them is, their weight. My Makita, gives them a very good run for the money. It's done many jobs for me that the wd's couldn't due to their weight and safety reasons.
I do have an older skilsaw direct-drive that's just plain junk.
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