I've never had any mushy sounds using those options, but not all effects work with all profiles. Just try another profile.
If you really want the best doubler/widening effect for a single guitar then the Eventide MicroPitch pretty much stands alone at the top. It's my favorite for this sort of thing. Otherwise, tracking two guitars or more is the better option.
Its for a live application. I've tried all different kinds of profiles. Have you tried the doubler from Neural DSP? I think its possibly better than the Eventide.