I've been more than satisfied with the sounds available in Gearbox/Pod Farm. Seriously top notch stuff in there.* My only complaint is that I don't have full flexibility over the ordering of the components, so for that I augment the modeler with pedals that allow me a bit more granular control over what feeds into what.
*- No, I don't love EVERY model, but there are enough good to great ones for me to do what I want to do.