As a backyard chicken, a layer, a pet, -
My best advice is to go with what you love.
Don't just follow what common breeds everyone else says, go with what you wish to have. Do extensive studying and you'd be surprised. There's more to the world of chickens than Production Reds, Barred Rocks, Sex-Links, Buff Orpingtons, Australorps, and Easter Eggers. . . . There's Columbian Rocks, Rhode Island Whites, true Ameraucanas, and even Blue Australorps just to name some different colors of the same breed. (
except, Ameraucanas and Easter Eggers are not the same)
If I lived in the city and could only have say three hens, I'd choose an Araucana (real one, not an EE) a Polish (preferrably of a neat color) and a Shamo. If I could add to that I'd do a French Marans or another Shamo.
Why those you might ask?
Because Araucanas are truly awesome looking, very rare, come in some beautiful colors, lay beautiful blue eggs, are great pets, and eat very little for how chunky but small they are.
Polish are also truly awesome looking, especially in neat colors like Tolbunt and Silver Laced, lay nice snow-white eggs, are also super pets, mine are always the most curious and friendly of all, and make wonderful (temporary) house guests!
Shamos are just downright awesome. An awesome and unique appearance like the other two, but very misleading too. They look like raptors out to eat your flesh, but they're the most friendly of breeds out there, it is practically impossible to find a mean one due to extensive breeding against such for hundreds of years, so, they're generally a really, really good "pet" type chicken. Both boys and girls. And you can never get tired of how their faces either scare people or their bodies puzzle people.
So, it's always in yourself, what do YOU like?