Which headlight to buy?

Hello,

I am first year resident of ENT but not in USA (apologize for my unintentional language mistakes).

I was searching for an advice on buying headlight but not for the purpose of OR than for regular examinations in infirmary. I am a little bit tired of catching a light with my head mirror But also, I guess my patients would appreciate the possibility where I do not have to light them with reflector to see something whether it is in nose or ear cavity.

At first I have seen the on from Welch Allyn like this one:
http://www.welchallyn.com/products/e...0000001085.htm
or this one:
http://www.reddylite.com/pages/reddylite1-2.htm.

From experience, is it better to buy one headlight with LED or xenon, or even halogenic light?
Does the temperature of light (LED, xenon, halogen) distort the colour of what we look at?
I have made a research over the forum but not found what I was looking for.

Tnx for all insight....