If you ride in the desert over goat thorns and land mines, buy those $300 woven steel and Kevlar tubes. Otherwise whatever works. I mean, all a tube does is hold in the air. Don't worry too much about size, either. (Valves are a consideration - usually only type and length - so tubes aren't completely interchangeable.)
Performance puts their tubes on sale at about half price a couple times a year: stock up.
And carry at least one spare.
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Stupidity got us into this mess - why can't it get us out?
- Will Rogers