Originally Posted by
squarenoise
If you're running friction shifters, my #1 vote would be a tie between a vintage Shimano 600 or Sachs Aris. If you're using indexed shifters, go with modern Shimano (and maybe paint over the logos on the black cog). I personally would not trust the Sunrace for very long rides/touring, but would feel confident with the Shimano.
I've never had a 7 speed ARIS freewheel not index perfectly with a Shimano drivetrain. They were designed to do so, and they do. (The 8 speed ones are reputed to work just as well, but good luck finding one.) And they're built like a brick outhouse. Great freewheel.
--Shannon