# Translation
The main thing is don't focus on the construction type - go by how it feels and what's good for your back. I personally believed in the miracle of springs for a long time until I actually tried different options myself. Turned out comfort doesn't depend on whether there are springs or not, but on how well the mattress supports your spine in your actual sleeping position.
For back problems, here's my advice: go to a store, take your shoes off, and lie on each mattress for at least a minute or two in your normal sleeping position. Don't worry about looking weird - it actually matters. Pay attention to whether you feel your lower back sagging or, on the flip side, if the firmness is pressing down. A good orthopedic mattress should follow the contours of your body but not sink in.
As for durability - you've got to be honest about the materials. Cheap spring mattresses really do often start squeaking and sagging. Foam-free ones with quality filling like coconut or high-density foam hold up pretty well, but that also depends on the price. Look at the manufacturer's warranty - that's a good sign of how confident they are in their product.