Try giving a bit more detail:
What will it be used for - is it targets exclusively, and what kind - high accuracy paper punching or silhouette type FT/HFT or plinking?
Budget - and does this include scope, mounts, filling cylinder, carry case etc......
What is important to you - calibre/shot count/weight/single/multi shot......
There are just so many variables that will give you the wrong answer unless you narrow it down a bit, then you will get a much better and more appropriate answer.
James