We are looking to replace our Mattress which had a cost of around $8500 at RRP (not what we paid!) 13 years ago as it has popped a something metal out the side of it. 

We have looked at beds with a similar or thereabouts RRP, and then some significantly more for comparison.  

We have narrowed it down to two beds. One at around 4K and one which is a bit of a chunk under double that (Which is about the cost of our current Mattress + Inflation).

Both are extremely comfortable, one has a traditional pocket spring, the other has two layers of springs (About 1200 of them). 

I am interested to hear from others who have made a 'significant investment' in a mattress and if you have any good or bad stories about them?