I don't think you mentioned Pro Updates before.
OmniFocus is more powerful than
2Do even without them.
I'm not saying
2Do is vastly inferior to
OmniFocus, but I think it is simpler (and the Mac App is NOT cheaper than
OmniFocus). My point is - if you need a good task management solution, your needs will probably grow, and you might as well consider getting a more advances solution at the beginning (and spare some time & money by not having to switch to it later).