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).
I'm quite happy to spend a bit of cash on a more advanced solution.
I've bought 2Do, AwesomeNote, Things, and a whole host of others, including Omnifocus, but there's only so much cash I'll part with. Omnifocus took the piss IMO. I'm not alone in that thinking.
Think I tried 2Do out on the Mac, the trial version. Think I ended up going for Omnifocus at the time as I was purely using it on a Mac and got the pro version for the custom perspectives.
Tried or bought pretty much all of them, and it was mainly for work.
I've changed jobs recently and no longer use a mac, so made all the above pretty much useless. Resorted to Wunderlist. Not as good as any of the above, but its slim pickings on Windows IMO.