Question #3...What do you want a shotgun for. Clays, Hunting, Home Defense, posting cool pictures on internet forums?
Benellis are great guns for duck hunting and three gun matches, but will pound the snot out of you if you shoot clays.
Remington 1100, Beretta 390/391, Browning gold if you want a clays gun.
Remingtons have more aftermarket goodies.
The old Browning Automatic Shotgun still has a following, Clones made by Remington and Savage.
The old Winchester Super X (Not the current super x2) is a real gem if you can find one.
If you want to spend a whole lot of money for status look into the Cosmi.
If you browse through the old threads here and in other shotgun oriented forums you will find a wealth of information, some of it actually usefull.