Which one?
I really like Nikon scopes. Good glass at a good price. They are starting to creep up in price though. Watch for rebates, they are generally the instant kind and you can save $50-$100.
The P series is basically the Prostaff optics with exposed target turrets.
The M series is basically the Monarch optics with exposed target turrets.
Some people don't like the exposed turrets because they can get bumped walking through the woods. The Prostaff has both finger and zero reset turrets but they are covered (and smaller).
I like higher power optics, 10-12x, to have side focus which the P series doesn't have.
I have 2 of the M-223 and really like them but they are about twice the price of the P-223.
Their BDC is nice if you take the time to learn how to use it. They also have both mil-dot and Nikoplex reticles if the BDC is too much clutter for you. Nikon has a program for their scopes, Spot On. Check it out on their website
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