These professional PA speakers with matching amplifiers are a really good choice as it IS what some of the pros are using in clubs and for concerts. I've used (I think) QSC speakers and they are stupid loud in one of my client's homes. But, they aren't inexpensive, or light weight. Two people have a hard time lifting and moving them, and they are four feet tall and wide. The ones I sold I did not include subwoofers with, but they have them available as well.
The rub is the price... But, they will last for an extremely long time and can handle plenty of volume.