See this a lot in topics. Just wondering what the big benefit is in doing this, I think it's bad practice to mix products.
Surely you want something that does the job on it's own. And when you get people saying product 'A' is amazing and then say in the same breathe they just add some product 'B' to it seems a bit daft.
I will use SPM/Pureclean for most jobs. If I don't think they will cut the mustard I will use Powerburst, Ultrapak or whatever is appropriate.