How would you upgrade my entry level system?

Thanks for the responses.
Guess I have some thinking to do.
short term: try Tidal streaming. Consider non Sonus option. 
Medium term: consider upgrade on speakers and then build new system.
I like the existing sound.
would just like to more captivated, can't articulate it any better than that.

Thanks for all the responses.

Ive made 2 changes so far.

Signed up for Tidal $20 per month (post trial).  Really enjoying access to lots of new and old music at decent quality.

Primarily playing tidal via Oppo 105 to take advantage of the dac vs Sonos Connect.

it sounds much better than before.

what do I do next ? Not sure. I could do with new power cables for sure as using standard ones. 

I'm reluctant to change the new Audiovector Q3 floorstanders.

Potentially they lack some bass but may hold in case we move house.

Was considering changing the brio r, would Naim Uniti be an upgrade and convenient ? I heard they are good fit with Audiovector.  Or a Hegel model.  

Not sure what I'll do next but glad I have some ideas and that the above has led to some enhancements already.