Given your criteria I'd say either BFD2 or Superior Drummer would NOT be what you need.
Both involve a lot of time and effort and have steep learning curves for a non drummer.
You haven't said what type of music you are trying to create and that can be a major factor but you do say you're a guitarist so it could be jazz, jazz funk, punk, post punk, indie, reggae, ska, folk, blues and erm.....whatever.
I just spent the morning listening to Steven Slates SSD4 and have to say that for out of the box sounds that are mostly of the rock and metal variety I've not heard anything better.
He claims to cover hundreds of genres in his video but having listened to all 87 of his demo's on line I say that's just bollox.
Still you can pick up his essential collection (light version) for $20 from
Audiomidi which I just did so you're not really losing much if you decide it's not for you.
Steve