My Phil & Sebastian story is a bit different from the rest - I actually stumbled upon them first in Chinook Mall when they opened up a branch in the expansion area. It wasn't until later that I discovered the Marda Loop location, the "homebase" (so to speak). I've been here a number of times now. I really like how bright it is in here during the daytime.
The only "flaws" (if you can even call it that) is that this place has built up such a following, it is near impossible to find a table inside. Parking often is tricky, but such is the case with many shops in Marda Loop.
Depending on when you go, they have different roasts and blends to try out. This is a pro and a con for me, especially if I find I really like one that they only carry for a limited time. Their espresso beans don't change, and that consistency is something I love - their lattes and Americanos are incredibly tasty.