If you and your dog love Tug-o-War, you need to check out the two toys specifically designed by West Paw for that purpose, Tizzi and Bumi! They are durable and guaranteed to last. Disc is durable and can be tugged as well, but is designed more for fetching.
Salsa, Tango, and Wacky Worm are plush toys that are a lot of fun and are designed for tugging as well, but are not as rugged and don't come with the guarantee. These plush toys just love to be shaken and tossed by their dog owner too.