Please help me to pick a speaker...

The Dynaudio is a really fine speaker. How much power can your amp put out, they need some juice.

VR4 jr IS AN AWESOME SPEAKER, JUST REMEMBER you will need to keep them a good bit away from walls, but they really REALLY can shine!

totem any model from forest up.
the forests will be the best sound for the money.
For detail, response, bass and highs and depth to the music the forest are a good place to start. And the higher you go up in models it only gets better.
the Forests will give any speaker 2 and 3 times the price a run for the money.

I also recommend you consider a pair of Meadowlark Ospreys. They come available used for around 3/4 of your budget. Very musical, and very efficient. Good luck.

When I bought my first pair of high quality speakers, I didn't consider the possibility that I might want to listen quietly sometimes, so I ended up with speakers that sounded great 95% of the time but lost a lot when I turned the power down. That's why I love my Silverlines. They sound great loud, and they sound qreat at low volume too.