I agree, it would depend upon your graduation and your particular practice.
I use the Littman 4000 (amplified or electronic stethoscope)
I would suggest you look over www.allheart.com
they have many different types of stethoscopes and descriptions, prices etc.
Or, go to a practitioner (Nurse, NP, DO, MD) and ask about their stethoscope, how long they have had it and do they like it.
Good luck to you