Many unbranded goods are actually made by famous brandname companies. They launch low price alternatives to cover the whole market span without harming the image of their major brandname. The goods are often of decent quality, though maybe not quite as good as the more expensive version.
On the other hand, private labels in the supermarkets are a great way to save and get top quality - all supermarket chains have a brand name (eg. Tesco) and they get the top companies to produce the goods under this name. The manufacturing companies are forced to do so, otherwise the supermarket chain refuses to list their major brand in its stores.
So, for all supermarket named goods, always check the address of the manufacturer on the back (by law it has to be there) and then check the address of some of the top brands - you might be surprised. This is the best way to get top quality at low prices.
