Three-way tie for me, I only have three so far, all in 12 gauge (photo at bottom)
1 Winchester- my first shotgun soon as I was old enough. It's a model 1912 (or model 12? which is correct?), with poly-choke adjustable muzzle-choke, bought it for $190 many years back, it's in great shape
1 Remington 870 wingmaster- two barrels short and long. I love the furniture on this scatter-gun,
and
1 Mossberg 500- I had already shot a friend's 'Berg many times, and found mine brand new in a clearance sale for much less than I usually see them go for, I couldn't pass it up. Glad I bought it too, 100% reliable, and I don't care if I scuff up the plastic stocks. It's my 'beater' but that doesn't mean I abuse it, I take good care of it
here's the only photo I have of all three of 'em, (cropped from a much bigger photo of all my long-guns)
as I was previewing my post, it occurred to me to share a simple idea: in my photo you can see I use an elastic shell-holder on my mossberg. I used to have to adjust it after shooting, as it would eventually slide forward. A stupidly simple solution to this annoyance was to unscrew the buttpad just enough to scootch some of the elastic between the stock and the pad, then re-tighten it back up. Now the elastic carrier stays put