I only have one "LQS." And I like it, it qualifies for friendliness, they don't follow you around, but offer help if you need it- they know their stock very well-
They have lots of patterns, and lots of fabrics, and lots of display quilts-
The only suggestion I would have is maybe they could offer a little more variety in the fabrics- for instance, they don't carry much Asian fabric, which I love.
They do have a loyalty program, which I also like, and they have a big sale once a year.
I think having a table with marked down fabrics is also a good idea.
They also carry my patterns and display my samples, and are very easy to work with, so really, I have no complaints.