In Nebraska we had a double stainless steel sink and I liked that (had it put in when we bought the place, not sure what the original was, maybe porcelain), now in my condo in Maryland the kitchen has a double wide stainless steel sink with one faucet but two drains (one with a garbage disposal), it's sort of a two sink except the divider is only a half inch high, so its one large sink.
If I had my choice I think I'd go back to the two separate sinks, I don't wash any large dishes (don't cook) and don't have a dog now - I did have in Nebraska but he was just 5 lbs and fit easily (tho unhappily, usually with one paw trying to climb out) into one side of the double sink. (the other dogs were too big for any sink and went to the groomers)