I just bought a Littman Master Cardiology, I had to splurge and get the black edition of course just cuz it's sweet..... Anyways, I love it and everyone at work that just has to listen through it says they love it as well. The tunable diaphragm is nice because you don't have to have the bell on the other end of it making it heavier. However I see a lot of nurses in our ICU using the Littman Cardiology III which is basically the same steth only it has the physical bell on the other side that you rotate the chest peice for. I also hear that DRG has really nice stethescopes. Mine was $250.00 at the local store but I picked it up online for $161.00 from HM International.......
www.hmint.com