Mattress topper recommendations please

[Chrisinthemorning]

We have just got a new bed, it's a Hypnos one but I am finding it a bit hard and getting lower back ache (am back sleeper).
I think a decent soft mattress topper might help- any recs please?

[SilverGiraffe7]

I have a Tempur mattress topper and it's wonderful. Had it many years. Was a poor sleeper before I got it but sleep like a log now!