I have always used a Littmann...and now use the expensive Littmann Cardiology III. It is simply one of the absolute best out there.
With that comes a hefty price, around, or just under 200 bucks. The one I use now was 158.00, and I've had it for seven years.
There is no better scope out there.
Pro: Unusually fine sound, solid build, good customer service, enough ear pieces to fit just about anyone, comes in a rainbow of colors [which did not impress me, I use black, but the RN spouse changes colors about once every five years]. It can be engraved, and probably should be.
Con: Price. And...everyone knows that at work, you don't put it down anywhere, ever, 'cause it'll be gone in a New York minute, and hanging around the neck of one of your "peers" and gone forever!
There are some health care pro's who say that this scope is too much for anyone other than a doctor...which makes no sense to me, if you gotta hear, you gotta hear!
She will love it.
Len
PS I just checked and you can get one at Amazon for around 140 bucks, a real deal...