Reply to Help finding good dj speakers upgrade!

Hey all I currently have a pair of Numark NMP5 speakers, for my dj setup, But these little guys (5" woofer 1" tweeter) dont seem to be able to handle much abuse when it comes to high volumes (i've had them for less then a year and i'm already getting that buzzing, 'youve pushed the amplifier to hard sound' with deep bass kicks etc). So i'm looking to upgrade. My budget is under $250 and im looking for a pair of speakers that are meant to play high volumes and take some abuse! Thanks

*edit sorry i forgot to mention by high volumes i meant ability to rock a house party (so larger woofer's then the nmp5s currently have ). I'd like to use them at home at out if i need to