The 10 does have a slight ballistic advantage over the 3.5 12. That being said, I had an SP10 and my brother has a BPS 10 and we both quit using them because they are so damned heavy. The Mossberg 835 with it's big 10 ga. barrel patterns great and has replaced my heavy 10.
"Suppose you were an idiot, and suppose you were a member of Congress, but I repeat myself." Mark Twain