Moved into a new place with no furniture and originally had a Koala "calm as" mattress.
Had a lot of issues with the Koala and was regularly waking up with back pain (think it was too firm for me) so I returned it after about 6 weeks.
Now I have a Sherman "full body hug" mattress and while it's much better than the Koala, it's not quite as soft as I'd hoped and I'm still feeling a little achy sometimes, especially after sleeping on my back for 8+ hours. I'd say for an achiness comparison, the Sherman is 1-2/10 while the Koala was ~7/10 (where 10 is the highest achiness).
I'm on the fence on whether I should look at yet another mattress or just stick it out? I've only had the Sherman for about 2 weeks and it's definitely a notable improvement over the Koala so it might get better over time. Also, if sleeping in the same position for a long time is going to result in some aches no matter what, changing the mattress isn't going to help.
Does anyone have any ideas or advice?
Try a mattress topper, we've added one from Aldi to a firm mattress. Made a significant difference.