I just replaced the Hannabach with a set of Savarez Corum Alliance 500 AR. I ordered that some time ago and had been reluctant to put it on, because of reviews that Corum basses wouldn't last. Based on your input I felt encouraged to go ahead with that (Thanks). It is my first set of carbon trebles. I think I need some experience with carbon trebles. I have a new Cristal Cantiga set (510CR) still to try. After that I hopefully have some idea on carbons vs normal nylon trebles and on the sensitivity of Savarez D-strings.
The lower tension of the trebles of the 500AR in comparison to the Hannabach 815 MT is directly obvious. Certain passages I struggled with on the Hannabach are a lot easier with the 500AR. Now I have to see how I get on with this over the next weeks. So far I was always impressed when having a new string set on the guitar. It is only after a few days that some sets didn't turn out as suitable for me and my guitar.
I feel I owe an update. The Savarez Corum Alliance Red (500 AR) are now on for almost 4 weeks (2 days short). The D-string is not as marked as the one on the Hannabach 815 MT or the D'Addario EJ45C I had before. I destroyed the D-string of the latter two in less than 2 weeks. While having the Corum-Alliance I tried to reduce the clamping, so I am not sure it is the strings alone. I think I can continue using the Savarez for a week or two more (though might change them sooner out of curiosity about the 510CR set I have in my guitar case).
I am currently quite fond of the Alliance trebles. I feel it took them about 2-3 weeks to sound really nice, though on advise of my tutor I have worked on my nails and my hand position. So again this is not scientific in any way.
I think I will experiment a bit more, but for me Corum Alliance Red seems an option for the future. 4 weeks+ of string live seems doable to me. The Corum Alliance play quite easy due to the lowish tension and are quite easy to source.
Thanks for every one who contributed. I appreciate it and look forward is someone has comments.