Yeah, I can confirm Xenon runs as hot as halogen - thats what I have in my kitchen. Not puck lights though - strips of lights in various lengths. Bulb life is not impressive and are pricey unless you buy the multipacks. The light is of high quality though.
I'm not impressed with LED lighting - at least as far as the kitchen goes. If you want to go that way DO NOT buy anything that you haven't seen first hand and determined its brightness and color rendering will be suitable for your needs.
I'm also not a fan of puck lights as I prefer even illumination across as much of the counter as I can get. (It makes it easier to see what the food looks like before I burn it to a crisp

Consider seeing if your local electrical lighting/ supply house has anything decent in the way of strip lights in various lengths. I've seen halogen, xenon, fluorescent and led in this type of packaging. The track lighting jadnashua is talking about is also a good option. I believe the bulbs are incandescent and if it is the setup I'm thinking of it is low voltage and also requires a transformer.
-rick