Hi mate
To be honest I've never used jute because that's the stuff garden centres sell as garden string and it never seems to last very long .
The hemp that you can buy now is probably as good as it's going to get and many people don't like it because it has to be dried after use .
If you do like hemp try using the treated stuff from Bridport, it's nice and easy to tie and does last longer, I've got some into thier 5th season - no problem . Failing that Bridport sell a poly/linen mix which looks very much like hemp, a bit lighter, performs just as well in the field and doesn't rot.