It's a Ford/Chevy/Dodge kind of thing. What answer you get depends on who you ask and which one they like.
How the string is made makes more of a difference than the material, IMO. You can get a good string, or a lousy string, in any material. For instance, 12 strands of Dynaflight '97, loops padded to 18 (flemish), is going to be a good string for most any 45-65# recurve. 8 strands on a 55# bow is going to drive you nuts because of the stretch. If you do your part with tuning, it will be very quiet. If you don't, it can be loud. With one, Dynaflight '97 is great. On the other, it stinks--same material.
Then throw in personal preferances, and it can really get confusing.
About the only way to compare them is do it yourself.
Just want to know what is a good performing string, that gives a longer bow life, and has enough stretch to adjust the string but not so much as to have to constantly adjust the string.
As far as performance, there's normally not enough difference to notice (without a chrony at least) in any of the HMPE materials, pending the string is made correctly.
I haven't seen any proof of any string cutting down on the life of a bow--again, properly made.
The material is either going to have stretch/creep, or it isn't. I like 8125G, 8190 Universal, and Dynaflight '97. I don't care for underbuilt, I don't care for overbuilt. I like a happy medium for durability and stability.
Chad