Well, just when I PMd James and told him we think alike, I have to go with Cyberpower.
And, I would also say that for the server, the more you can get the better -- to a degree.
If you really want to be set, you can buy a couple of extras and keep them charged. If you come in with no power and your UPS are drained, you have one for the server and another for one of your PCs so you can get to what you need at least temporarily. You could do it with just the server, but I hate working directly on the server.
