Latex mattress?? Advice please asap

Hello everyone,

I have spent the last few days trying out every mattress ever made and I have narrowed it down to getting a latex mattress. Its so hard to choose between them though, so I would love to hear anyones experiences with latex mattresses -

do you have one?
what brand is it?
do you like it or not? why?

the couple Im choosing between at the moment are a natures rest by AH beard from 40winks. It is reduced at the moment (ends tomorrow hence the asap). Then there is a plain zoned latex bed from sleep city which is a bit $1000 cheaper and feels quite nice. Then there is a blend of latex and memory foam at mattress supermarket in the middle of both of them in cost, very comfy, but not as springy, and maybe a little hot. Then there is the mattress manufacturers here in brisbane, which is actually the most expensive but they offer a 21yr warranty.

All of the above are eco certified yada yada 100% natural latex.
Probably I would be happy with any of them but I don't want to make an expensive mistake.
Please help with any advice, please please please :)
My poor 3yr old is soooo over looking at beds lol