I'm a fan of Michael's. They are usually my first pick whenever I need any arts & crafts supplies, especially with those 40%-50% off coupons!

The store is kept well maintained and the employees are very friendly. I've had issues with my phone where I couldn't retrieve a coupon so they went ahead and applied the discount for me, that was cool since not many stores do it.
Sometimes I do feel that the Michael's in Downey has a little more of a selection than this one, but it's still good.

They recently started a rewards program. If registered, you get exclusive offers, members only events, receipt free returns and early alerts for any sales... so don't forget to register.