The rubber actually feels softer than most other brands. I'm using it and at earlier stage it is quiet but after some time it become noisy.

But noise from tyre not just due to rubber compound, the main culprit is the thread design and how it cancelling the noise.

Should last you very much km's. My friend travel penang till jb every month, after 100k km the tyre looks like not used till half also.

You cant just change the tyre profile. Otherwise the meter will not accurate and it might affect your suspension parts also. The best is you changed to 205 55 15 so that overall diameter still about the same.

the first number, 205 or 195 is the tyre width, in millimeters. the second number, which makes it all harder, 50 or 55 or 60 is the tyre profile (sidewall height), in percentage to the tyre width. you need to maintain your sidewall height if you are not changing rim size. 205 55 is closer to your original sidewall height than 195 55.

215 55 would be much closer to your original sidewall height but whether your rim, clearance on the fender/inside can take another 20mm is another factor. one more issue is since the tyre is now wider, is the engine have power enough to move the car without giving any lag feeling to the driver become a question.