What's the take on online only mattress brands like Sonno, Joey, and Wonderbed Vs the more traditional brands touted here?

Hi guys, I'm looking for a new mattress for my new home.

1. I honestly think I can sleep on whatever mattress under me. Pillows are more important, for me anyways I think. I sleep within 5 mins of hitting the bed. Whether it's good sleep or not I don't know, but even though my body can tell vaguely some beds are more comfortable than others, I almost invariably fall asleep within a few minutes.

2. That said, my wife has trouble sleeping and getting a good night's sleep. She also does not think it's due to the mattress, but who knows. So I'm thinking of getting a good mattress, if possible, for my new home.

3. Here are my criteria:
- Budget around MYR 2,000 to 4,000.
- King size
- I sometime turn during sleep, and that can affect my light sleeper wife...so a mattress that transfers as little movement from side to side is preferred (does this limit my selection to latex/foam?)
- Firmness...this is hard to describe in word as it's obviously relative, but we prefer something on the semi-firm side. Usually when I go to a shop and say we want firm, 50% of the time the first bed that is recommended to us is slightly too firm, and the other 50% of the beds are just about just nice.

4. I was at the mid valley home expo today and tried a few beds. A few that we thought were comfortable were:
- King Koil Simplicity Harmony Support (chirotech coil system...whatever that means?)
- Geetha Intercontinental 228
- Napure New Barbara

5. I was also looking at the Sonno/Joey mattresses, due to their 99-day return and refund policy. But I'm not sure how they stack up against more established brands.

6. And finally, I'll be using a wooden bed frame, with a slatted based. I've read that many mattresses are not suitable for such bed frames. I intend to place a piece of flat plywood on it so that the surface is even and flat. Will that do the trick?

What are your advice and recommendations?

Thanks.

This post has been edited by QuickFire: Aug 1 2020, 09:13 AM