Good Stereo Speakers for outside use during BBQs, evening pot luck dinners etc

I want to purchase (preferably used) a pair of good speakers to place in our back yard for get togethers with friends. I would like speakers that resolve well with clean highs and decent bass but nothing on the level of very high end. I will probably be running around 40 ft of speaker wire from a Pass X250.8

I'm just looking to have quality music in the back yard to enjoy with food, drink and non-audiophile friends. Easy set up and take down is desired as I really don't want to schlep my Vandersteen's in and out of the house every time I want music outside. Any suggestions for speakers and wire would be appreciated.

Bruce