For me it would be the Mossberg 930. I've been shooting one for several years now and it's as reliable as any gun I've ever shot over time, including many that are much more expensive. Mine also patterns unbelievably well.
Jerry Miculek has been shooting one for some time as well and he says it's as quick as any gun he's ever shot and ultra reliable. I published a "Conversation" with him almost 2 years ago, just after he switched from the M2 to 930 and he's been shooting one since.
I've found Mossberg CS to also be excellent.
That would be my choice.
Thanks,
Clark