I think this is the best casual pizza option around. I don't even see the comparison to Glass Nickel, but maybe I've just had bad experiences there, food and service-wise.
You can't go wrong with the Roman Candle menu item itself -- great pizza! The vibe is chill Willy St and the service is more quirky than anything, though I guess I can see how people have had bad experiences. (Sometimes they take away my fork after the appetizer.) Just be proactive if your server does something silly or you need their attention. It's part of the charm. I love the place, so I'm more willing to be forgiving, I guess. Keep that good pizza coming.