I would mostly base the choice on wether or not you are going to be shuffling CDs around a lot or are you fine with listening to the same CD for hours? If you like much variety in your music then I'd suggest the 7894 because of the MP3 feature. It's just something about having 100+ tracks on a CD that gets me. The blackout feature is pretty nice at night so that you don't have a huge display bright in your eyes. That's my 2 cents