I wear NC20, NC25, and sometimes NC30 in Studio Fix Fluid and either NC25, NC30, or C4 in Studio fix powder, all depending on the time of year and how much of a tan I have.
I usually blend my own shades of foundation, but when I was wearing approximately NC25 in fluid I was matched to 120 in MUFE HD Foundation..
I like the coverage (and tone) of the MUFE HD better than anything else. It gives good coverage, doesn't feel heavy, and leaves a soft smooth finish. it's my favourite liquid foundation, and the one I reach for most often.
That being said, I prefer the staying power of the Face & Body (as it is water resistant) for hot days when I will be outdoors. The coverage is more sheer that that of the MUFE HD, but it seems to last a bit longer on my oily skin.
Hope this helps!