I've often looked for, and I think I have finally found, the one UPS to rule them all. For me at least. My requirements were a bit daunting. I wanted a high powered system that could power everything except for my personal computer, and I wanted it to be an "unusual" (for the USA) 220-240V system. My "winter" configuration probably pulls 3600 watts, with at least 7 CPU/MB/RAM/PSU/Fans, each with a GPU or two or three. So we're looking at something larger than a 4000VA setup. Much larger. Of course I'm not going to buy new, so off to ebay, one more time, after numerous failed attempts to find 240V systems. I'm not sure what I did different, but I had some luck this time, I think. So, if you NEEDED it, do you think a good used one of these with 20 brand new batteries is worth $700 delivered? ($500 for the unit, $200 for the new batteries with 3 yr warranty) More important than the battery back-up, I need the line filtering/protection. Lots of gear, ya know? Can't believe I've gone so long without even proper surge protection.