Yeah, lots happened since the 4.x release. The fast workflow alone made me sacrifice Cubase's advanced MIDI editing. Would've probably stayed in Cubase if it had the ability to focus VSTis to screen when you change tracks like Logic and Studio One does.I bought S1 about a week ago, through classifieds, got a good deal. I wasn't expecting to be as impressed with it as I am. I'm quite impressed with many aspects of it, including performance, but also workflow. I feel drawn towards using it and learning it. The devs are very responsive and are working really hard on it, it has a very bright future. One thing that stood out...S1 was able too use the VST3 version of the VEP plugin, which means it easily handled multiport to a single VEP instance, much like Cubase and DP can (and Logic can't without hacks and work arounds).
Cubase Pro 9.5 worked perfectly for me in terms of speed and stability, but the windows scattered everywhere, jittery display speed and subpar mixer was too much for me.