Summary: I have previously used this to migrate XP to XP and, for the most part, it was great. The current version might be just as good if the OS and/or bit (32 or 64) matches between source and destination OS. But my experience with these XP to 7 x64 attempts was 1 for 4. As documented, anything that requires activation is likely not going to simply work without further action or even reinstallation.
Pros: Program runs as expected User interface is good. One out of four attempted migrations from XP to 7 x64 did complete. The three failed migrations did not completely mess up the target OS The undo Migration feature works well
Cons: Three out of four attempted migrations from XP to 7 x64 did NOT complete and had to be undone.