Flame on!
Vienna is the Mecca of Music.
Sat in the back corner of the Musikverein beside the organ. Could not even see the musicians. Brahms Double Concerto with the home team. The music was rich, opulent and just as good as in the stalls. That hall is magic.
* The first chairs of the Vienna Phil are on par with any soloist in the known universe. (They were the soloists in the Brahms Double.) Their former first cello had tone production that put Rostoprovich and Yo Yo Ma in the shade.
When you get two diametrically opposed opinions, there's only one way to settle it. Go to Vienna and decide for yourself. For the price of a pair of interconnects. The Vienna Opera House is another great sounding hall. Sat in the front row and it was so loud. So very very gloriously loud. And yes, you can reproduce that sound in your room. Don't let anyone tell you otherwise. They're just repeating accepted wisdom.
Daytime attractions in Vienna include the Art History Museum (Kunsthistorische) which has the largest collection of Breugels outside Holland. The MAK has Klimt and you'll have the place to yourself. For the horsey set, there's the Spanish Riding School. The food is pretty good. The coffee sensational. And the Munich Hi Fi show is four hours drive away. Still time to get organized and go.