I bought a Citori 625 for Skeet. It happened to have an adjustable comb, which I didn't touch for awhile. As I got better, I changed the fit by moving the comb up and increasing cast off. Later I shot Sporting Clays. After awhile I sensed I needed more weight at the end of the barrels. I bought a Caesar Guerini Invictus with 32" barrels. I use it for Sporting and Skeet but it's a little slow and heavy for hunting. For hunting I use the Citori or, better yet, a sweet little Browning 28 gauge with 28" barrels.
If I were you, I would probably pick 30" barrels unless you are shorter than 5' 10" But make sure you try out any gun before you buy it.
I would definitely specify an adjustable comb on any gun I bought from now on.
