i was planning on getting a behringer ep2500 power amp. (how well does it hold the low end? and have you heard of any problems with them?) and i was going to get the avatar 2x10 cab and the 4x10 cab. the 2x10 is rated at 700 watts and the 4x10 is rated at 1400 watts. is it safe to run it bridged mono? my other choice would be a 850 watt QSC power amp.