Advice on choke/shell combo results in Beretta Extrema (Winchester ER or Nitro?)

[Bamarich]

Would like you opinions, including the pros and cons, of two different setups in my Beretta Extrema.  The first setup is a Hevi-Shot tube shooting Nitro 4x5x7.  At 40 yards, the combo will put 283 pellets in a 10" circle and at 50 yards, it will put 131 in the same circle.  The second setup is an Indian Creek tube shooting Winchester Extended Range #6.  At 40 yards, I put 196 pellets in a 10" circle and at 50 yards, it will put 100 in the same area.

While not fond of long shots, I often find myself hunting fields where I can misjudge a bird fairly easily.  I also wonder what the increase in costs associated w/ hevishot is going to do for the price of Nitros.  Provided, I have about equal coverage in all my patterns at the two distances, which combo would you recommend and why?    

[rebel]

In my two Extrema 2's I have the Hevi Shot turkey chokes and one gun flat LOVES 3" 2oz #6's and the other loves the 3.5" #6's

Both throw incredible patterns with Hevi13.