I'll second Bitwig. It's not often I pay $400 for something and regret nothing, let alone software. But Bitwig has proven its worth.

Note to Bitwig curious people. It currently has a sale, so it's $300 (300 euro's if you're in Europe).

During Black Friday they also seem to have a sale.

The music software industry tends to have these sales in general around these times.

Bitwig is great, ... and works on Linux (flatpak!)