Soundbar, speakers, or large portable for trailer?

I'm not good w sonos at all but I can make it work. The beam is compatible with their other speakers, which their earlier soundbars did not and it's much cheaper than the older ones. I presume Sonos products lack flexibility so you are locked into the brand if you want subs, and other speakers to expand your system. However they are good products, well worth the money, but not for the fussiest audiophile.