Probably good advice. I just received my order of the Zyex mediums, on trial to replace my Evah Pirazzi Weichs which replaced my Obligatos for arco and pizz jazz playing. I like the EPWs but am frustrated with their lack of pizz sustain at the end of the fingerboard and I know that the Zyex has more sustain. I could also do with a bit more in your face punch when soloing arco and think the Zyex might meet that need. Time will tell. I may well go back to the Obligatos which seem somewhere between the two.