My son and I are just getting started in the KJ business, and we purchased the DK Millenium set as well as the Sound Choice Foundations 1 & 2 and all 5 Bricks. We had a total of around 3,400 songs, including about 660 dupes.
I agree with Lonman......we got some good stuff on DK that wasn't in the Sound Choice collections. There are even some dupes between the Sound Choice Foundations and the Bricks. It looks like it's hard to avoid dupes when starting out.
I have found 107 songs so far that I can sing well (my opinion....
). I chose the Sound Choice versions over the DK most of the time.
These are about 30% classic country and 70% golden oldies rock. I did, however, find some VERY good DK versions that blew away the Sound Choice hands down!
I did notice the little melody track that Lonmam referred to in some of the DK versions. It didn't annoy me however. I did NOT notice that some songs were in a lower key that the original....have to go and check that out.
Overall, we are quite satisfied with what we bought. We are now SELECTIVELY filling out with some newer stuff ('97 to present). We are still encountering some dupes, but trying to keep it to a minimum.