My friend is studying herbal medicine. Her birthday is coming up and I want to get her a stethoscope that she has mentioned in passing. Is there a particular kind or brand of stethoscope I should try to get?

These are the two I've been looking at:

https://www.amazon.com/Littmann-2218B...6405116&sr=8-7

https://www.amazon.com/Littmann-3128-...6405116&sr=8-6

Thanks!