Just looked up Cocco strings. You picked a pretty light guage at 40-100, so those are going to be pretty loose no matter what.
The question now is, hex core or round core?
A hex core string is usually stiffer and has less play or rubberband feel.
A round core string often feels supple and easier to manipulate.
Also I'm willing to bet the Elixers have above average tension due to the outer wrapping and coating.
You might want to contact R. Cocco and ask him the same questions you've asked us.
usa@coccostrings.com