Do yourself a favor...................consider holding out for the new Beretta CX-4. It is a Bullpup design based on their semi-auto pistol frames. It will come in 9mm, .40S&W, and .45ACP and uses their exisiting pistol magazines.
These things are totally interchangeable for left & right hand shooters and you can add any combination of tactical equipment you might ever want.

VERY cool gun & will retail for less than $700. Check out Berettausa.com for all the details.