I've had some bad experience as FS and BB. Customer service is virtually non-existent particularly any post sales issues.
I just go there if I already know what I'm going to purchase and walk out.
+1 = I don't think I have made any purchases from a B&M where the salesperson knew anything close to my knowledge base. A very basic knowledge base due to researching either here or AVS.
"A fanatic is someone who can't change his mind and won't change the subject" Churchill