Thanks for sharing Thomas, but...
I personally don't like the hour button on this Zeitwerk.... a Zeitwerk is easy to adjust the time, so I much prefer not having a permanent button on the side of the watch to save 30 seconds of time. I LOVE the button on Lange perpetual calendars as it's incredibly convenient as you can avoid using pushers, but for simply forwarding an hour, I much prefer a cleaner button-less design. I believe Lange only added this hour button as a way of fast forwarding through dates (ie, skipping hours makes racing through days faster), so it's an added issue with having a watch with a date (something you don't have with the other older Zeitwerk models).
The extra power reserve is definitely nice, but to be honest, a Zeitwerk isn't a daily wearer for me so 36 V 72 makes no difference when it's in a rotation... I end up winding every single watch I wear on a daily basis regardless of its PR. Winding a Zeitwerk is a pleasure anyway, so I wouldn't put too much value on the extra PR unless it's a daily wearer. Maybe in 2020 they'll update their other Zeitwerk models with the longer PR, who knows?!
It simply boils down to whether you want the date or not and if you're comparing it to a standard Zeitwerk or a Striking Time. As you say, the Striking Time/Decimal Strikes do add something "special" to the watch, as does the date. The only way you'll really know is to try both of them on, but unfortunately that's not the easiest. Best of luck!