I have a very similar problem. I came on here to ask and then saw this post. I'm in 2nd semester of nursing school. Currently using a lightweight 2 SE that was given to me. It's a little used and beat up, but hey it was free to start with. As far as I know I don't have any significant hearing loss. I'll admit it's probably not great though. But with some patients (usually on the heavy side), I have a hard time hearing apical pulse and lung sounds. I can hear my fingers creak if they move ever so slightly holding the bell side, and it's not turned to the wrong side. That sound really makes it harder. I think it's due to the plastic/resin material the lightweight headpiece is made of. I mentioned my troubles to my clinical instructor and one of her suggestions was to get a cardiology stethoscope. I'm wondering now if a cardiology would be overkill for nursing and if I'd be fine with a classic III. It seems to me that's what a lot of the staff nurses use at the hospital and It's mostly docs with the cardiologys. I don't to be the weirdo using a fancy higher end steth than is maybe necessary, but I also don't want to have any doubt that I'm hearing everything good.