Since moving to Pittsburgh 3 years ago these guys have become my go-to destination for all guitar needs. Their service is absolutely the best. Very knowledgeable staff, and always quick to reply when I drop them an email. These guys genuinely love what they do, and they never make me feel stupid for not knowing something or not having the same musical "cred" as they do.
Their inventory is consistently refreshed with new and vintage stuff, and if they don't have something, they'll order it for you at competitive prices. The service and repairs are great too (and at reasonable prices). Can't say enough about the people at N stuff. Keep up the great work.