The normal PVC tubing that you can get at the hardware store isn't too bad, so long as you opt for the 1/8" walled stuff... the thinwall tubing isn't great for bends, though that goes for the thinwall Tygon and Clearflex as well. I do feel that it's worth the money to go with a premium PVC though.
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Michael E. Robbins
M.A.Sc. Candidate, University of Toronto
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