DS slept on an Aldi self inflating mat for a few months when he had a bad back - and he was fine.
We took them all camping recently, but the concensus was that DH & DD preferred our air beds.
In that awful wind & rain, some frinds were in an Aldi tent and it wasn't very well designed. The water got in underneath as the bottom of the tent was a bit flappy. Apparently it has never leaked through the top but the wind/rain combination finished it off.
We use the Aldi camping torches and other accessories, but for major items like tents I would probably avoid and go for a higher HH (min 3000)