MACH II

I have an SD M2 King and it’s good for a cheaper mattress wife and I are heavy, you can get extra firm inserts for free during the trail period, like wise softer than medium if required. Our spare bed is a 6k traditional spring mattress and it’s amazing, but a different price point to the SD.

Never found a mattress worth splurging on till Sleeping Duck, I’m never going back. Ours is half firm (my side), half soft (husbands side) and everyone’s already talked about how great it is except THE BEST PART! The bed doesn’t shake as much as other beds on your side when the other person moves/turns over!!! The amount of sleep that’s saved me is insane.

I've tried nearly all of them and SD is the best (it's my second, changed from Q to K). Although i'd caution on getting the firm-only one because it is quite firm and might be too firm for you. I do wish I'd paid a bit more for the one you can customise.

I had a mach II and hated it after 10months. The mattress is really really heavy and it was only a double. If the person/people who change the sheets has back problems you will regret buying this.

Sleeping duck nothing else is even close the reviews are legit.  Maybe try their indestructible bed base as well I think I’ve seen advertised? 

Yeap! Mach II. I went from a double bed to a king and you shouldn’t underestimate just how big that is. I’ve always been told that soft mattresses aren’t supportive but this has not let me down at all

Only 6 months in. I still can’t believe what I was sleeping on before this giant marshmallow of softness.

A firm, supportive marshmallow if you will. Also my first mattress in a box and watching it expand was wicked

115kg here, king sized sleeping duck mach II on the indestruct bed frame - but with the medium toppers. I sleep so comfortably in this bed and my wife who prefers softer beds likes it too. I don't think i've had a better bed setup - had it 2.5 years so far.