I have tried since 2008 to find a karaoke machine that worked well, and stayed that way. So far this fits the bill. Glad the others didn't work out; this one does so much more. I love the key-change feature! Good mics, good sound, easy to use controls. Nice echo and bass. I have had this for about 3 weeks and still happy with it. Gotta love how technology keeps improving devices. :) I haven't tried recording on it yet, or using an SD card to sing with. The 300 songs that come with it are mostly American folk music that we all learned in 3rd grade, but you know what, it's worth preserving that heritage. Some of them are still fun to sing to. The religious CD was a definite plus. Lots of songs from when I was very young. Overall am very happy with this machine, AND it's lightweight! Only one very small issue... if I sing a high note, loud, too close to the mic, the speaker makes a tinny sound. (So I don't do that anymore :) Great job on this one, Emerson!