I don't have problems with my Tempurpedic mattress being too hot. The pillow feels warm sometimes, and you can't just turn it over due to its shape. For my next pillow I'm thinking of trying their traditionally-shaped version.

Regarding latex, I would never get a latex mattress due to allergies. I am not allergic to latex, but my sister is highly allergic to it, and I have enough other allergies to worry about developing an allergy from 8 hours worth of exposure to it every night.