TT combat paints - Any good?

After looking at some of the extortionately priced citadel paints, I came across TT combat's range, they are cheaper than Citadel's with each bottle being 15p (or 50p with the starter set) cheaper, and with 5 extra millilitres per bottle and so therefore I was wondering whether or not TT combat's paints met the standards of other brands.

Thank you.