My other favorite place to play/see shows in Madison. The sound is always near perfect. The double bar thing really helps.
The only thing that slightly makes shows there not so good is the size of the place. When you go to see a rock show you expect the space to be a little tight. This creates a vibe where everyone feels like they should be moving around together, slamming beers, and having a rowdy time. The High Noon is so big that it's hard to get enough Madisonians to venture a few blocks away from the square to fill it. That's one reason it's better to see national acts there than local ones. Usually you'll see locals opening for the nationals anyway.
Also, as a local musician who also tours I'd like to let people know that, $10-$15 is not a lot to pay for a decent show. Many people think they should only be paying about $5 to see a show no matter what size the venue is. Well that would be great if you want bands and sound techs to make no money. I would actually applaud Cathy and the High Noon staff for doing their part to adjust cover prices for inflation. Something that really hasn't been done since the '80s.
By the way I think I paid about $12 to see Th' Legendary Shack Shakers with The Paybacks play there a year or two ago and it was one of the best shows I've ever seen.