Truely Thorin, I don't know how much of a computer hardware guy you are; never really sat down and talked computer junk with you; but your best bet when it comes to computers is what ever works with your wallet. Computers really aren't all that different inside anymore; most work with none-proprietary parts, and will take the same. Only the cheapness of the parts used is really the difference. And if your wallet says cheap, then go cheap.
But really, minus the OS and Monitor, you can build this system with well known parts for almost the same price (example is from Memory Express). As Lazy said, although I did it with the same video card, I would say the Monitor/OS is the deal on that machine, but then again, I got you one more GB of RAM with this one, and I know these parts are top quality. Inside that Acer box... who knows.
But as I said before, your wallet.