I have no choice but to rely on swatches, and especially comparison swatches, as sadly I am nowhere near a MAC store or counter. MAC's own descriptions and online swatches are so far from the real thing it's ridiculous - that's the problem with computer generated colours rather than photographs. I appreciate that photographs can be misleading, and videos can also be dark, light or have a colour caste, from but with the comparison swatches there is usually at least one colour there that I already have so I can see if the picture is lighter/darker or whatever.
I'm very pale skinned, possibly something like NW15 I'm told, and absolutely love Blushbaby. I have no need for another so similar, though, so Sur is off my list.
I happen to agree that Oomph looks a mess - to me at least, because of the blackness. I prefer something where the green is more obvious. Marvel I am skipping because I have Push The Edge already, and am also planning on getting some of the Peacocky purples. Saffron is still a strong possibility.