I use Bonsai ([url]www.natara.com[/url]) on my Windows PC which syncs very well with my Palm PDA. Very simple! Bonsai --> Palm PDA --> Bonsai.

I would use Omni Focus but it lacks some critical features. At some point though if those features are implemented, this is how I would do things if I decide to use Omni Focus on my Mac Book.

Omni Focus on Mac --> Take laptop with me :-)

or

Omni Focus on Mac --> Print out what I need :-)

The MacWorld expo starts tomorrow and there has been talk of an ultra-portable Mac laptop being announced. If so, that might help -- just take your laptop with you, esp. if its a good ultra portable Mac laptop.