Below is a list of companies that I have personal experience with getting product warranties honored.
Alligator of Sweden
Bissell
Calphalon
Ginsu
Good Cook
Hanes
iPower
L'Oreal
Microfiber Wholesale
Norwex
Probiotic Maker
Pyrex
Saferest Mattress Protectors
Shape Mags
Wahl Clippers
What about you? What companies have you had a good experience with regarding product warranties or guarantees?