I've taken two of their sewing classes (Rotary Cutting and Quilting Basics) and have also purchased fabric from The Sewcial Lounge. Their fabric selection leans more towards quilting fabric (lots of cottons) and they have many cute, modern prints. They are pricier than Jo-Ann's but will sometimes run promotions (like buy one yard, get one 1/2 off). They also sell thread, notions, and Janome sewing machine accessories.
They are Madison's only authorized Janome dealer, and have a Janome technician that comes in every month for tune-ups and repairs.
The sewing classes I've taken were with Jeni Baker, and I appreciate the small class size (4-6 people depending on the class). Jeni is a wonderful and patient instructor and I've learned so much from her classes!