I find this match up the hardest. In the early game, I can attack the Toss with stim pack marines and doctors and do a number on the toss. In the later rounds, I seem to own the Toss because I can drop their shields and nuke the Toss or use battleships.
Some of you may remember the posts about GPGNet at the following locations (for redundancy, in case of a ReputationDefender.com take down) - http://groups.google.com/group/microsoft.public.windowsxp.games/browse_thread/th read/f5e80485741e885a/8a18c4a742de42d6