I got this unit
www.otoscopes.us/ophthalmoscope-otoscope-kit.htm which I really like. The otoscope is excellent and the opthalmoscope is decent enough to get by. My Uncle who is a practicing physician advised me not to throw my money away on an expensive kit at this time. He said that I would find most hospitals and clinics provide diagnostic equipment for you when you begin clinicals and your $500 Welch Allyns will set idle for 20 years collecting dust or worse leaking battery acid from the rechargable batteries inside the unit and ruining it. He also said the batteries on the Welch Allyns are very expensive and they lose their ability to hold a charge over time so the otoscope you buy today will need a new battery by the time you are opening a clinic and wanting to put you kit to use. He also said most of the time in your own clinic you will want a wall mounted unit since these large hand held models are actually to large to carry in your pocket tend to walk away
on their own in your clinic if left out in patient rooms. He said a cheaper otoscope that just uses plain old alkalines is the way to go.