Birxx has a rather nice size menu and written out upon that menu is the statement that all of their pizzas can be made vegan. That's very comforting to me. Also the service is right quick, even when it's busy.
The pizza it's self is a nice thin crust. I have yet to have any of their pizza with a traditional sauce but their olive oil based sauce is decent, though i think it could use more garlic. The bruschetta is awesome though, and for my vegan friends, make sure to request it with pita chips.
The pizza are designed for one person to be able to eat. First time there for a light meal, I split a pizza with a friend and had to order more food. Note I'm not a massive eater either.
Good beer selection and drink specials. I would say they boast upwards of 20 different beer on their menu. Usually you can get a pretty good deal on them too.