I tend to agree with the point Mike is making. But just be sure you're clear on what your objectives are before buying into this.
If you want to join PA for the work/experience in itself, the above is true. If this is the case, however, your question should be more specific, i.e. I am keen on building experience/a career in industry/area X, is PA currently a good place to do this?
If you want to work in consulting with a view to opening future doors, catapulting your career, etc. then the external perception (snobbery) of PA counts for a lot more. If this is the case, your question should be something like "I want to work for PA, with a view to moving on to X after N years. Is this a good step?".
You didn't mention anything about future career prospects, I just want to make sure you excluded this part of the question purposefully.