Being Vietnamese I can be a little picky on this one. So far I've tried Pho Pasteur, and Golden Bell.
Pho Pastuer was good for taste but their Pho Dac Biet didn't even have meat-balls in it, didn't seem very deluxe to me.
Golden Bell gets a solid 2 thumbs down from me. Their broth was obviously old, and super sweet either from too much sugar or MSG. Plus the sign at the front said they where raising their prices this month.
On the Viet subject, I tried Thi Thi subs the other day... great stuff