Of those, I like the 16 gauge Model 37
Classic shotgun.
And the Browning A5 16.
I would use it as a stepping stone towards the Sweet Sixteen. Why?
Because I think every birdhunter should have a Belgium made Sweet Sixteen. Vintage and Classy.
My advice, stay away from 28 gauges. They are addicting. Very addicting! And they can get a little pricey. But nothing shoots like a quality 28 gauge!
Good luck with whatever you choose,
Ed