I've spent 2 days trying out the whole batch that I have but I don't really like any of them as an alternative to mic'ing a real cab. They all sound very static and boring, with most being muddy and fizzy, some being downright harsh, some sound phasey, some boomy. It doesn't help that I'm attempting to coax a good tone out of a Bugera 6260 with them, but I'd really have hoped for some quicker gratification all the same.
The only option I can see is quad-tracking, using 2 sets of impulses to hide each others' flaws.