Looking for 5.1 speakers for Denon AVR 3805

I don't have to much knowledge on AV an speaker system. What I am planning is to set up a system for home theater and music. Maybe the nusic is much more important. I looked for B&W 6 and 7 series, dynaaudio, vienna accustics Beethoven series. It seems that I liked the VA Beethovens. But I never had a chance to listen with my AV receiver. Do you have a suggestion? My budget is around 5-10K USD. Do you think it is better to use same brand for center and sub as well