I don't know anything about "TempCo" but TEMCo is in my experience excellent wire for vaping. I get all my Kanthal A1 and SS316L from TEMCo. You can get their wire from 25ft, 50ft, 100ft (and more). They ship quickly too.
Wire, Cable & Accessories - TEMCo Industrial
Click on non-resistance wire for SS316L.
