Pair of Fives: Adding a sub

I have a pair of Sonos fives for music and I have been toying with the idea of adding a sub.

I have them set up in my den with a large couch/seating area and a pool table. The space is roughly 800 Square Feet.

Sub Mini or/vs. Gen 3/4?

When researching, it seems like some people like the Sub Mini more music.

Looking for first hand opinions?