On Line Audio Mail Order Retailers

Not sure if could say these would be my top choice simply because they are the ONLY ones I have ever ordered anything from so far.
But I have purchased 3 separate items from Parts Connexion.
All 3 transactions were flawless, all arrived perfect and exactly as described and were a huge saving over new.

I have ordered from Music Direct, B & H and Best Buy.  All 3 gave great service.

Music Direct, Audio Advisor, Crutchfield, and for used audiophile items try TMR; The Music Room.
Check Amazon and you will see that they use third party vendors. Amazon does not stock high-end audio components. So if technical advice, returns or service is needed, vendors have different policies.

My first experience with Music Direct was a pleasant surprise. I ordered a refurbished integrated and when it arrived one channel was dead. One short phone call and a replacement was on the way, along with a shipping label for return of the defective one. No questions, no need to return the defective amp first. When the replacement arrived I saw that it was not labeled as refurbished. I called to let them know about that and was told they were out of refurbished units so they sent a new one. Service exactly as you'd want it.
Best Buy has good specials and can be handy if they have a local store but you'd be lucky to find anyone in the store who knows anything about the gear.

In a world with flawed fundamentals, there is no such thing as a perfect decision. A pipe dream of a flawed human mind, it is.

If it was a perfect world, though, we’d all be marching up and down the square in the same uniforms, in a perfect synchronicity, and be a non-living non-aware thing.

So much for perfection, as perfection --has no mind.

Life is a grind. It can be no other way.