I want to buy a pair of portable powered speakers but I am not sure which will be best. The problem is that they will have to work in two situations, most of the time they will be used as low volume speakers for TV / Video and general music of every type, (pop, house, dance, Jazz, easy listening and even classical) but they must also be able to be taken to parties (held both indoor and outdoor) where they will be required to deliver high quality audio at high volumes and with a good solid bass, (without the use of and additional Sub bass speaker) the source on these occasions will be directly from a Laptop running Tractor DJ Software. They must be quick and simple to set up. I have been thinking of the JBL PRX 725, JBL PRX 735 or the Yamaha DSR 215 but I am not sure which would be the best option ...... any advice would be appreciated.