I'd have thought that getting out there and lying on them would be the best idea but they all feel comfy at first then that declines. The last two were great for the first few months or so then I find i'm tossing and turning as morning nears.
I imagine being the lump that I am and as I get older I need something well constructed rather than the few hundred quid offerings that we normally go for.
Are they any go to or avoid brands that you'd recommend?