When I was younger, I wanted the lightest titanium everything. Now, I want more teeth (on my cassettes) and longer cassette life. Campy gear lasts a long time. After 13 years, my 10 speed rear derailleur snapped in half (I think it was a chain issue), so I had to upgrade to 11 speed. I believe the 11 speed system performs better that the old 10 speed.
Getting back to cassettes, over the 13 years of my 10 speed system on two bikes, the Chorus cassettes showed less wear than the titanium. With care and cleaning, I believe the Chorus cassettes will give you many years of service.
I got a set of climbing specific wheels and wanted a cassette that would leverage that even further. The 32-11 was a good call. I really don't use the 32 that often (most climbs are fine with the 30) but when you hit a wall and need just a little more leverage and a little more confidence, the 32 is nice to have. I was worried about chain length because my other wheelset has a 30-11, but I have had no problem. If I was moving from a 28 to a 32, I'd probably need an extra link or two, but the 30-32 switch has performed fine on an Ultergra Di2 longcage derailleur.
I ride year round in the snow, dirt, gravel, and desert. These chains hold up better than Shimano and Sram and shift well. Comes with masterlink also. They shift well on my MTB 3x10 and gravel mullet with wolftooth tanpan 2x10.