All the waterless wash products are similar and do a similar job.
I prefer Greased Lightning as it is a good product and works very well in comparison to other makes I have tried.
Don't know about WOW.
But I can endorse Damian's praise of Greased Lightning.
It's that good I now buy it in bulk. 5 litres a time and so much cheaper than the spray size.
I have a used the waterless wash by Care-avan.As Damian has there several products on the market do the Same thing its a case preference I think.It Is recommend to use Micro Fibre clothes so of to Aldi and get stocked up