I use a PowerCenter on all my snares and prefer 6.5s.Respectfully, if your 5" is sounding "thin", you might want to reconsider head choice, tuning, etc. Check out this Mike Dawson video (Modern Drummer magazine). He did a reissuded 6.5 and vintage 5" comparison...both sound amazing, imo. And the 5" certainly doesn't sound thin.
5" Acros are great,have had many over the decades,but 6.5,yeah baby!