deep question<G>...
My go-to guitar libraries are, well, my guitars most of the time. But for some strange reason I can't stop fiddling with guitar libraries!
You mentioned Orange Tree, I think they are among the best guitar libraries available, and they just keep getting better. However, with great power comes a learning curve. You can do some really amazing things - more than you are probably aiming to do right now, but you will have to spend some time taming them. I've been using them for a while now, so I'm not the best judge on ease of use - you might just fall into them?
My other favorite is Indiginus - Torch is cool, and he just released a Tele library that is amazing. These are not quite as feature rich, but they are a lot easier to learn.
I'll add that both developers are as good as it gets with respect to taking care of their customers.
Have fun!