What’s your favorite audio show to attend and why?

You are lucky you have a choice in the USA. In Australia now there is only one held in Melbourne every god knows when with nowhere near the range of gear that you have.

2019 Lone Star Audio Fest. Smaller show with about 28 rooms but small enough to go to every room and spend time in the ones you like. 

*S*  This one. that which you are now reading....

No:

Travel, hotel, lousy food, crowds in the spaces I might have interest in, loud rooms playing such if only to distract ( it did....I cruised past), equipment in rooms too small for the displayed, specious claims for that which didn't deserve it....

It always seems to exhibit that which you've no interest, displaced by that which you've none....(Well, mine, anyway....)...

@dweller

I have always wondered why any vender would bring new equipment to a show. I would think they’d want everything to sound its best on day one.

Go to any show you can go to--as an audiophile you will not have as much fun doing anything else.  I like going to almost every room to get a taste of what is out there and then I go back to rooms that I thought sounded particularly good.  One has to keep in mind that something that does not sound good at the show may still be a worthy component; show conditions are rough and not every exhibitor can surmount acoustic problems with the room.  If something sounds really good, you know that it is capable of sounding really good.  Therefore, judgment that something is bad comes with a caveat, but good is good.  If you can, show up first thing in the morning at the rooms you are most interested in; this is when the traffic is light.  If you plan to buy stuff like records or used gear in the market area, show up early on the first day of the show to maximize your selection; if you have specific items you are searching for, ask the vendor because it might not be on display because it is being held to stock the display on another day.

These days, I only go to the show in my area--Capital Audiofest.  Even though it is not the largest show, there is more than enough of interest to fill three days of show going.  In the old days, the best was C.E.S. and T.H.E. Show which were held at the same time in Las Vegas in adjacent hotels.