I use the Spacestation or Bose Compact for everything from a 30 person group for Karaoke to a dinner for 200. I don't think either is an overkill unless you just want something lighter for a small venue.
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact