I am using the light gauge now 43-104 , but wandered what to expect if trying the Extra light gauge , less tension , would there be a lot of tone change or ?? Thanks .
Have you looked into the Labella Low Tension Flats? From the link
"Total Tension in Lbs: 134.90 (1st 36.2, 2nd 34, 3rd 30.5, 4th 34.2)" LTF-4A Low Tension Flexible Flats 42-100 | La Bella Strings
Compare those values with the tension of the other strings you are looking at.
I am using the light gauge now 43-104 , but wandered what to expect if trying the Extra light gauge , less tension , would there be a lot of tone change or ?? Thanks .