I am always trying out E strings. I remember there was only ever one E string that I truly loved. It didn’t have any whistling, it’s tone matched the warm quality of my other strings and is sound was silky smooth. It was the one that had came on the violin I currently play and the seller told me it was a gold obligato E string but I have never had another gold obligato strings like it. In fact, I usually dislike them quite a lot.
I currently play Larsen Tzigane strings, which I quite like but I intend to try out their virtuoso strings in the near future