Looking for recommendations on Latex/Pocket Spring

Recently went to Sunway Pyramid Expo saw Akemi Hotel series pocket + latex top around 4k after nego for King
Seems like just enter market but they advertise big name hotels (Datai/Banjaran/etc) as their B2B customer
Seems like not much reviews anywhere though

Then stumble on Dreamnite, few comments around but seems OEM
Full Latex King 2.4k
Pocket Spring 14" + latex top - 3.8k

Going to see2 more tomorrow but wife likes the Akemi but they have "guarantee" instead of warranty so kinda sus on that part.

I'm back/side sleeper and my wife kinda does everything lol
170cm / 90kg
150cm / 50kg

Budget probably under 4k

We both have minor back issues and need some support there so latex seems the natural long term option

Any suggestions besides the above?