On-Line Bullions Dealers

What on-line bullion dealers do you recommend (not interested in numismatics)?

There are so many on-line dealers to choose from. What are some of the in your experience? Any pitfalls? I imagine TF would recommend those that advertise on this website, but would appreciate to hear about some of your experiences.

I have been looking at my local coin shop. I don't mind paying the premiums, but they also tell me they have to charge sales tax. Maybe if I walked in with cash they would change their mind, but I don't have the nerve to do that.

I am new to buying gold so go easy on me. I appreciate any feedback.