I find this works well for cleansing skin, leaving it feel clean but not stripped of moisture. I don't find that there's much difference between expensive and cheaper Konjac sponges so I feel that all Konjac sponges would probably do the job.
They work well because it isn't too harsh on your skin but still gives a gentle exfoliation and clean. It manages to lift off light makeup too.
My only negative is that it gets mouldy fairly quickly despite hanging it to dry so look into replacing it more often!
I’ve tried a few of these from various brands and it’s a pretty generic product - I haven’t noticed any variation between cheaper and more expensive ones. These little sponges make foaming cleansers feel a lot gentler on my skin and prevent that tight feeling. I’ve stopped using them on my face though as I’ve noticed they get mouldy quite quickly even when you change them regularly (I do like that they are bio-degradable so you can chuck them in the compost or garden when you’re done). I’ve gone back to just using my hands to apply a not so stripping cleanser to my face. I still use them with shower gel on my body though and they are so much nicer than those horrible plastic shower loofahs.