RE: Weatherby Shotguns Vs Remington
Remington makes shotguns, and has made reliable, time proven designs like the 870, 1100, and 11-87 for decades. Weatherby does not. I'd consider the Remington 11-87.
I've seen some Beretta AL390's at Wal Mart with synthetic stocks for around $550 or so. Those are great guns for a very good price. If you can get your hand on one of those 390's, and it feels and fits you well, I'd recommend one of those.
However, at the end of the day, get a shotgun that fits you. If it does not, you'll be very unsatisfied, regardless of how much you paid, or how much you liked the brand.