I like Ed Wyse Beauty Supply. It usually has the essentials I need for my business. I wish that they carried a few more of the things I use but compared to most so-called beauty supply places that don't even carry cotton rounds, I have no real complaints.
The staff is always nice and willing to look up prices or help in any way they can. They often have good sales on equipment although I think their prices in general are pretty high (for equipment only).
They have a ton of hair and nail products but alas, I am neither cosmetologist nor manicurist. Just your everyday fabulous esthetician>.<