So, I lost my trusty littmann cardiology iii a few months ago and am in the market for a new stethoscope. Turns out the III has been discontinued and replaced by the IV. I was all set to pick up a IV, but read the reviews for this and there appears to be a flaw in the design that makes the diaphragms prone to falling off. This makes me leary of picking it up. I also had a II SE in the past but it seems to have been replaced by the classic III. I am NOT looking for something a cardiologist needs. Just need something to identify basic murmurs, clearly hear breath sounds, and listen to bowel sounds. Any recommendations?