I am planning on getting a QSC PLX - either the 1602 or 2402. I am not sure it is worth the extra $200 to go from 1000 watts to 1500w (in the case of my 4 ohm cabs in stereo) - for just a couple db. I have a Zon Sonus Special 6 and Carvin fretless piezo 6. I play numerous styles and venues. So far, 600w from my Crown into my pair of Avatar CB112H cabs has been sufficient. I am looking for a little more headroom, lighter weight (my Crown is 55lbs.), and hopefully better sound. I think I need the subsonic filters too because the sub lows from my basses really make those woofers move more than necessary. And what about the 1602 being class AB and the 2402 being class H. What are the differences and should I take them into consideration? Many thanks, Tom H.