I also recommend this one, has been great so far and has positive reviews on sleeplikethedead.com.

https://www.amazon.com/Zinus-Memory-Foam-Green-Mattress/dp/B00Q7EPPDA/ref=asc_df_B00Q7EPPDA/?tag=hyprod-20&linkCode=df0&hvadid=191941654061&hvpos=1o1&hvnetw=g&hvrand=9290909745178811837&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9009994&hvtargid=pla-332411538164&psc=1

Yep, I first cheaped out on a mattress and it slowly screwed my back up.

I got this one from Amazon and it helped so much https://www.amazon.com/dp/B00Q7EPPDA/ref=cm_sw_r_cp_awdb_t1_290gDbB01N1PJ

I haven't actually tried it but I have heard super good reviews about the green tea mattress on Amazon

I got this one mainly for the cost and then was over the moon when my body loved it: https://www.amazon.com/dp/B00Q7EPPDA/ref=dp_iou_view_item?ie=UTF8&psc=1