Cubase is looked at as more Pro than Sonar as it has been around much longer and Steinberg are behind the hole thing really, inventing VST and ASIO...when I used the Sonar 4 demo I found that I was pressing more buttons to do things and Cubase just had a more robust feel to it...
Sonar normally lags behind in functions apart from the odd thing..
the only thing in Sonar I would like is the drag and drop inserts which is meant to come in Cubase soon (funny as its already in WAVELAB)
its true you need to try it out to find which one works better for your way of working...take note SX3 is much better than SX1 and at the moment there is only an SX1 demo
I would say if its a hobby then get Sonar , its cheaper .... if you plan on going pro and building your set up more...I would spend the little bit extra and get Cubase
this is my view anyway.
hey there all good nowadays