I have evaluated the following books rules for two team teasers: Olympic, Pinnacle, Euro, ABC, Blue Grass, Royal, Millennium, All World, Get More, Bowmans, Cascade, Holywood, and Rio/Skybook.
The differences are below:
ABC is the best with ties counting as wins and the lowest juice. Juice on a 7 point two-teamer is -110, 6.5 points is -107. If you have a loss and a push it is graded as a loss. All individual game ties in the teaser are graded as a win. So, two ties would be a winner. Basically it's like getting a free half point if the numbers fall right.
Rio-Has the same advantages as ABC with individual game ties counting as wins in the teaser, but the juice on a 7 pointer is -130.
Millenium--Has the second best juice on a 7 pointer at -115. A win and a push is no action, a loss and a push is no action.
Blue Grass-same as Millenium except -120 juice on a 7 pointer.
Royal - Grades all teasers with a tie in it as No action. That can help or hurt depending on what the other play did.
The other books listed at the top have the basic teaser rules. All have -130 on the 7 pointers.