If you can find a Super Session, I, like many others here, think they're great. I love my I.
I got it to replace my Bari 68 hard rubber, which is also an excellent soprano mouthpiece for the money. I think the SS has a bit more colorful sound, but the Bari served me very, very well for years and it was cheap. Probably the most bang for your buck out of any sop mouthpiece on the market, in my experience.