Yes, I do like the score editor in Sonar better but within a few years Sonar will not be supported by either hardware and the operating system.
DP is definitely the closest DAW to Sonar in terms of ergonomics and workflow so until a new DAW is created that I like better I'll use DP. I may even come to liking it as much as I do Sonar.
I wonder if there is any chance that some Sonar developers will start their own company & continue to develop, support & sell Sonar?