Just a side note: I've opted for the subscription on purpose, I knew I'd pay more in the long run. But this gives me the chance to build my home studio from scratch without major compromises.
Maybe we can condense it down to some questions:
1.)
If you don't have the "free lifetime upgrade" plan, what will you have to pay monthly for ongoing updates for Sonar Platinum?
2.)
Does 1.) depend on /vary with how you initially purchased Platinum?
a: Via 50€ / month subscription
b: Via "upgrade-subscription" (e.g. from Sonar Pro 20€ / month to Sonar Plat 30€ / month)
c: Via full upfront payment ~500€
d: Via update upfront payment (e.g. from Pro to Plat) not sure about the price actually, 300€?