I'm considering lightening my gear load by going from a rack system with a SWR Grand Prix and a QSC PLX1602 to an Iamp-800. Looking for some insights as to how the iamp stacks up against bigger power amps. I bridge my PLX into 2 Epifani cabs (210 and 115) at 4 ohms so I'm using twice the power as the nominal Iamp rating. I'm concerned that I'll miss the headroom. I also notice a big difference with the Epifanis going from 300W ea in stereo to 800W ea in mono (lots more punch). Anyone using the Iamp with Epis? Does the peak power rating play into an ability to drive power hungry cabs like a more powerfull power amp does? Will I experience a noticable increase in clarity and definition with the iamp? Thanks in advance.