Does jBridge still need to run as admin? That wasn't a workable system for me last time I looked at it. I have a couple of other plugins that can act as bridges though, but I'd prefer the DAW itself support the plugins formats I have/use. I don't like Ableton because it doesn't do VST3 for the same reasons. I do think Cubase's MIDI features will be very welcome and dongles and I get along just fine.
I doubt I'll stop using SONAR though, but I always get a lot out of learning and using other applications. If you really want to learn a DAW I think learning and using another different one can be one of the most instructive thing you can do. The differences and likenesses can help you refocus on what you are doing and how you are doing it. I think it applies to lots of things really.