Pho Lan is good, although they charge for some of the "extras" that usually come included (such as a spring roll cut up on Bún). Their Wor won ton soup is one of the better versions of the dish I've had, although the lack of a bigger size means I'm usually buying something else, too (i.e., spending more than $15 just on myself).
This is one of two or three vietnamese restaurants in Chestermere, and is certainly worth trying. I've chatted with the owner a few times, and she's a very nice lady who really respects her customers.
It's easy to miss this place; it's attached to a gas station in a gravel parking lot. The pin on the map is a bit misleading; access Pho Lan from Merganser Drive W (not from Hwy 1A / Chestermere Blvd).