Hard to say!
Sometimes I find this question easy to answer.
Somtimes, it's impossible!
It all depends on what I'm doing at the moment.
Right now, I'm shooting a lot of clay birds and my favorite two guns are an old Citori Skeet that got so loose I had it rebuilt and reblued. Even though it's tight again, shooting it is like putting on an old pair of slippers. It's a 20 ga.
When I want to shoot a 12 ga., I'm now shooting this Weatherby Orion D'Italia Gr. II. I know a lot of folks feel the gun isn't what it was when it was an SKB, not a Fausti--but the Fausti fits me perfectly now that I've put a recoil pad on it and I'm shooting it pretty well for gun I've only had for about a month. It's growing on me. I can usually tell which gun has become the current favorite by what shells seem to need reloading. I've spent much of this week loading 1 oz. loads for this gun.
Come fall, when my dog gets antsy to hunt (and I do, too), I suspect the favorites will be these CZ SXS guns. A 12 ga. Bobwhite and a 28 ga. Ringneck.
And if somebody should ever bust in my door, I have no doubt this Mossberg Persuader will most certainly be my favorite!
Like I said, it's hard to say!