
I have many years of existing projects in Sonar, there's too much effort to convert them to a new DAW, so I expect I'll maintain Sonar for a long time even if I move to another DAW.
I'm kind of watching & waiting & biding my time to see how well Bandlab will manage Cakewalk
I bought Studio One V3 (when it briefly seemed Sonar was gone for good) but I haven't installed it, so that's my "plan B". Studio One V4 has some nice features but isn't a must have for me.
Jim