I tried a whole set of EP-Gold. They are the quickest responding strings I know so far. As a set, they are very well balanced, the d string being particularly nice, powerful and clear, the a string maybe a tad on the shrill side.The g has good power, without the typical over the top Sound of rope core g strings. On my main Cello, the c string was too flabby under the bow, so I used a magnacore c string. I thought I'd now try a whole set magnacore medíum, and I really miss the EP-Gold top three strings. The magnacore d is just not as good as the EP-Gold, the g sounds like a Jet engine, the a string is a bit dull. I donated the old set to one of my students and on his Cello the whole set, including the c string, is very good.