every manufacturer says don't use +p+. It's a CYA thing. (although I seem to remember that Glock doesn't say that or something.)
I was just wondering if the M&P was worth $200 more
The price difference is a used vs. new thing. If you were getting the Beretta new, it would cost just as much as the M&P. They are both very fine pistols.
I own the M&P, my dad owns the beretta. The Beretta is heavier, and doesn't fit my hand well. It's a very accurate gun though.
The M&P fits my hand like it was made for me, and is extremely accurate.
Both are well made and very reliable.
If it matters to you, the M&P is lighter because of the plastic frame, and it has an accessory rail in case you ever want to mount a light.
By that same token, i think the beretta might be a bit of a "smoother" gun with slightly higher fit/finish, and it certainly has classic elegant lines that no black plastic pistol will ever match.
As one would expect from the Italians, it has function AND grace that are just magnificent.
The M&P, in typical American style is highly functional with styling as a far second to the question of "will it work?"
You can't go wrong with either.
Confused yet?