Good for you.
I keep trying it out every few years, but I still find the buy in cost across platforms to be too high for the benefits. I think perhaps I'm not "busy enough" for the value add.
Never understood the hype around OmniGroup. I tried most of their apps and even bought OF1 for Mac and iOS, but always found the experience clumsy and dated. In combination with their high prices I'm always wondering how they amassed such a cult-like following. I mean, good for them ... we need high-profile indie devs. Their apps are just not for me.
I'm also using their OmniGraffle app, and it's a different experience to OmniFocus. It's a lot more clumsy and things are not at the same level of polish.