Andrew, while I'm not selling my 987/2S I can tell you a few things about points you have raised, PSE relative to Tinnitus! I have Tinnitus and sometimes use the PSE in loud mode When switching on to Sport mode or Sport + it isn't necessary to have the PSE go to loud or even for PASM to switch on both can be configured using a PIWIS to the sports setting or not on selection of Sport etc. A PC should be able to do this for you.
Depending on how your Tinnitus is and how it is effected you may occasionally find it uncomfortable in loud mode but it does have a nice tone when in the quiet setting. Personally I like it in loud as it isn't too loud but in whichever setting it's running in as you hit 4,000 rpm it's not too quiet, I tend to switch to quiet when pottering around late at night as I approach home, however, it starts in loud and switches itself to quiet which is not optional, in either setting it has a nice rasp to it which my gen1 had to some degree but not such a nice tone. PDK is better in Sport mode as it is a more immediate response than in normal when driving in manual mode, when in auto the gears selected are pretty close to how most would select for the road, it learns how you drive.
PASM on 19" wheels is a bit harsh on some roads in high setting but the comfort setting is good and still has minimum roll, it can be expensive if it has problems and I ran 19' on my gen1 with standard suspension for eight years and didn't find it uncomfortable.
Depending on how your Tinnitus is and how it is effected you may occasionally find it uncomfortable in loud mode but it does have a nice tone when in the quiet setting. Personally I like it in loud as it isn't too loud but in whichever setting it's running in as you hit 4,000 rpm it's not too quiet, I tend to switch to quiet when pottering around late at night as I approach home, however, it starts in loud and switches itself to quiet which is not optional, in either setting it has a nice rasp to it which my gen1 had to some degree but not such a nice tone. PDK is better in Sport mode as it is a more immediate response than in normal when driving in manual mode, when in auto the gears selected are pretty close to how most would select for the road, it learns how you drive.
PASM on 19" wheels is a bit harsh on some roads in high setting but the comfort setting is good and still has minimum roll, it can be expensive if it has problems and I ran 19' on my gen1 with standard suspension for eight years and didn't find it uncomfortable.