I didn't discover HCW until I moved to Santa Fe, but I make sure to go every time I'm back in Austin. It is cozy and filled to the brim with yarn, books and supplies. It is easy to spend a long time there and hard not to find something to love.
Tutto is my Santa Fe LYS. Since they opened until the time I moved away in August, this was the place I would go for yarn. The owners and employees are very helpful and there are often other knitters and crafters in the store hanging out. It is a lovely place to hang out for a while looking at patterns or talking with anyone there. The sock yarn section is amazing. I love the customer appreciation punchcard. Mine is already mostly used up! Even now that I have moved away I still love Tutto and will always make it a part of my Santa Fe trips.