I've been eating pho what seems like phoever. I've always tipped because I enjoyed the food. I've found that holds true for a lot Asian food. For the first time that I can think of I'm tipping based on service. Everyone was super nice and quick to refill water witch and is important cause I tend to go overboard with sriracha. On top of the super fast service the food was phonomenal. This is now my new pho place