i'd burn to death, it just seems quicker and more epic than freezing to death. Plus if you freeze to death you have time to think about your regrets and everything you will leave behind but if you burn to death your just be like [i]oh god the PAIN
Definitely freeze. After awhile you would just go numb from cold anyway and just drift away. Every second up til your death if you were burnt would be complete agony. Its a no brainer.
That's a hard one... It would depend on if I was instantaneously dead and couldn't feel a thing. If it was slow, I would choose Freeze, but if it was quick, I would choose Burn.