I have a 1000MHz DP G4 (mirrored front) and having trouble with APC UPS BK500. I am here in Florida with very regular black outs, brown outs and power flicker. As often as my APC actually provides back-up power it does not provide back-up power. I have discussed this at length with their tech support. They have replaced the BK500 twice now and the problem remains. They now say that the G4 needs a faster transfer rate than the BK500 can deliver and that I need to move up to a Smart Back Up unit (much more expensive). Is this BS? Is the G4 more demanding with respect to transfer time? Is there another UPS that can do the job for lessthan the $320 for the APS Smart UPS? I just need enough VA to shut everything down when the power goes out. Auto shut down would be nice.