Never really understood the whole "super string" deal...??
B-50 always worked fine for me!
There are no real "super" strings. Some materials are just more consistent, more stable, and more durable than others. Polyester is the lowest on the scale for these characteristics, B-50 is the worst of the two polyester (Dacron) materials.
How the string is made can make a huge difference--as much as the material. A really lousy string can be made from the best material, and a decent string can be made from Dacron.
Bow noise is more a matter of bow design, tuning, and how the string is made...much moreso than the string material. I put silencers on everything regardless. Really don't know if it matters, but it makes me feel better even on my whisper quiet selfbows. Over the years I've gotten tons of comments at tournaments over how quiet my bows are...they always have some sort of HMPE or HMPE blend string on them.
We all upgrade in one way or another, even with strings. If not, everyone would be using squirrel hide, sinew, stinging nettle fiber, etc. for their strings. Countless critters have been killed with strings made from those materials, but how many still use them at all, much less exclusively?
I'm on the other side of the fence. It's a lot tougher, lot less stretch/creep (much more stable), I can make it just as quiet on my bows (if not quieter--critters don't seem to be able to tell a difference), my bows are made to accept it and are shooting just fine after years and years of using it...why wouldn't I use it?