Welcome. I don't think you will regret your decision. I am a faithful Sonar user, though I don't use it as much as I should. I have looked at PT 11 and at all the hardware available to go along with it... and if I ever want to go first class with PT.. I am going to spend some major bucks, not so with Sonar. Besides that, I really think that Sonar is better, if not better, more diverse, no better! It is more conducive to creativity. Then there is the residual rebelliousness from when I was younger, I never considered myself a lemming and find it offensive,
not so much that I make anything out of it, but that inevitable unspoken "ahem" when someone tells me that they use Pro Tools. You can hear almost always hear it between the lines, not always. "I don't use a "toy", I use Pro Tools"". Maybe it is just me.
Somehow PT got in the big studios and cultivated an image of being the only real professional DAW. I think that is changing but change is slow and hard. It says a lot for you that you switched. I have been in business (not music related) for over 25 years and a lot of people will stay with a company they don't even like, people just generally don't like change.
It is good to not be part of the herd sometimes! Again, welcome. You will find a lot of helpful people here. There is also the Coffee House if you need a dose of silliness!
Julien