Ours has different heat retention dependant on which side you use. I do find it too hot at times, though mostly in summer. You will turn your heating down though! Bonus.
Yes Sir.......they rock, best bed I've ever had...once you get used to it.....no more boingy-boingy-rebound though so 'some' things take some getting used to
We bought a memory foam bed about 8 months ago it took me ages to get used to it, Found i got back ache for the first two months and even with the coolmax covering i still find it bloody hot. The wife on the other hand hates it and wakes every morning with a bad back.