For those who got the MUFE gloss duo and aren't sure about the quality, I can attest that these are some of my favorite gloss formulas on the market. They are nice and smooth, but have just enough of a tack that the last nicely for a gloss. The Diamond formula, however, I haven't tried, so I wouldn't blame anyone who thought it was too gritty/shiny. If that doesn't bother you, though, the set is a steal!