Usher CP-8571 II - Long term opinions?

I am sure you have heard this before, you need to hear them to decide whether they are the right speaker for you and better if you can hear them in your own home.

your list covers a lot of speakers with very different sound, so good luck there :)

don't forget system synergy, you don't want to mate your amp with something overly warm if your Bel is already on the warm side (I don't know how Bel sounds like). you can counter it with cable matching, but this game can get frustrating.

Dynaudio makes fine speakers, I have owned some of their best and speakers that utilized their top end drivers. But after I was exposed to Scanspeak Revelator and Usher BE tweeters, I actually prefer Scanspeak and Usher for their ability to dish out more details, more leading edge info, more ambient, more micro dynamic, just more of everything that make live music more fun to listen to. For the same reason, I decided not to get Temptation.

As for Aerial, the only speaker I am familiar with is 20T and that's a wonderful speaker. However, the many times I heard 10T I was not impressed because the top end always has a hint of metal tweeter sound.

Usher are tuned to slightly romantic until you move up to BE-10/20 and they become very neutral. SF Cremona might fit your need as well, but they were a bit overly warm for me even though I have always loved SF sound. Verity might also fit the bill, but Usher 8571 II will provide more details than either speakers I mentioned above. Not just more details, more alive, more fun, just a joy to listen to.