QSC PLX is out because of the huge handles on the front. Same with Yamaha P7000. I want to be able to close the front door of the rack for transport. QSC PLX2 might be a consideration, but not sure I can handle the price! Crown XTI4000/2 series is on the radar, but have heard that the new lightweight amps aren't great for sub duty. Is that just internet garbage? But, it would be nice to have something that I could swing into stereo mode in a pinch if the main or monitor amp goes down, and run the sub on one channel and the other speakers on the second channel. Also considering Mackie M3000, but like the weight of the FRS2800 better. Should I consider Behringer EP4000 for price point? Since I'm only running kick drum and bass guitar through the sub, super clean sound isn't that much of an issue, but I am worried about dependability of Behringer, although they have decent term warranties. Any thoughts, or experience similar to the setup I have in mind?