DVD XCopy is moderately neat, but pretty limited. It is for the begining user, does what it claims to do quite nicely, and gives you NO options to do anything else. It will split a dual layer DVD into two single discs and let you burn those, but you have no choice in where and how it splits it. You can do basically the same thing with other free programs, and with a lot more flexability, but also a lot more work. It also prevents you from making a copy of copy, which, if you are using it for legal purposes, is probably no big deal. If you are not computer literate it is cool, but personally I used it a couple of times and now use more advanced methods to make copies of DVDs.
P.s. I have a Sony Dru-500a as well, and it is a perfectly nice burner. Perhaps overkill since I hear +R is dying, but still a nice burner.
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Ninti - MK IIa 60GB Smoke, 30GB, 10GB