I tried a Casper, then Simba, Eve, Emma, all for just under 100 days, all similar I ended up keeping an Otty, but on reflection it's a bit firm, I wish i'd stuck with Simba or Emma.

I suppose at least I had free mattress hire for well over a year!

Apparently some do 200 days now, so I may change or at least try a softer one for longer.