I can answer one question, yes, grubbiness goes away.I'm intrigued by the midrange presence, but I have a few questions:
-How balanced is the tension across strings? La Bella advertises all their sets as "perfectly balanced," but I have no clue what this actually means or whether they're referring to tension. Are these like Kalium sets where the tension is the same/close to it across strings, or more like regular sets?
-Related to the above: how do they feel when downtuned? I tune down a full step, and my low A occasionally goes down to G. How does the .128 low string in particular feel when tuned that low?
-Does the grabbiness go away over time?