Help with a mattress

Thanks for your help here. I realise you can’t comment on items you are not familiar with, I was just wondering if you’d heard anything about these brands in general? I used to think of these as high priced mattresses, but now having encountered the like of Tempur, VISpring etc, I think these are more mass market budget mattresses. I’ll have a read through those articals again, but I think there’s no better way to assess a mattress than to sleep on it over a prolonged period, which why I’m now going over to the Sleeping Duck thread:

https://forum.mattressunderground.com/t/uk-sleeping-duck-mattresses

I said above that I’d like to try a pocket spring / foam combination, and here it is, with a huge amount of marketing hype of course and another 100 day guarantee. I really hope I don’t have to send it back this time, this has gone on too long!