I'm looking for the best pair of active speakers available under $500 for my desktop PC and after a fair amount of research have narrowed the choices down to two models:   Swan M200MkIII   Behringer TRUTH B2031A   They'd be hooked up directly into my PC soundcard, no subwoofer.  I'd be primarily using them for listening to music and sometimes watching movies.     While they're both well reviewed, I'm having a hard time picking one over the other.  Looking...