Dear tph1,...

Sorry,... just realized that I never gave the weights of the Boxers. The advertised weight of the 120 is 9 - 1/4 to 10 pounds

As far as the other Boxers are concerned:

The Boxer 90 has a listed weight of 7 - 1/2 to 8 pounds; while the B-60 is projected at 7 -1/4 to 8 pounds.

Hope that gives you more information you can use to make a decision.

Signed,
Steve T.