Going by this statement :
Main use: Music (sometimes I watch movies and TV)
......personally I recommend:
* staying away from "bright" sounding speakers. To my ears this would include brands like Polk Audio & Klipsch. Why? Because much modern music & many remasters of older music seems to be recorded with exaggerated higher frequencies (to help overcome the deficiencies of cheap earbuds and low-bitrate MP3 files?) plus the widespread use of overcompression
can make this even worse, so bright-sounding speakers simply makes all that even worse i.e. irritating/tiring/unnatural.
* sticking with matching, or at least similar-sounding, surround speakers. Dissimilar-sounding front/rear speakers can prevent a proper surround soundfield from forming, significantly reducing the "suspension of disbelief" effect a home theater is supposed to create.
* staying away from speakers with tiny woofers (a single 4" and below). Personally I would not use a speaker with anything smaller than a 6.5" woofer, or 5.25" at the absolute
smallest. Anything smaller and imo music will sound thin/unconvincing/lack punch.
As far as network connectivity is concerned: the amount of great music out there in streaming form on the 'net is mind-blowing (there's literally thousands of stations to choose from), much better IMO than what most commercial radio stations offer with their stale, formulaic & "safe" music offerings. So for me anyway, network connectivity is almost mandatory!*
* there's standalone audio streamers available too, like this one