My computer is a custom pre-made computer from Sweetwater. They make really fantastic computers for audio production, so mine was tailor made to work with Sonar. I am not sure how a non-audio or regular consumer computer would work with Sonar though. The performance is very good. I have seen other people run DAWs on their home computers and they can be very sluggish, and they can't run very many plug-ins. Sonar is super fast on my computer though. It does crash sometimes, but then again it seems like most DAWs do, so I don't really think that's an issue.
I have been a Cakewalk user since the DOS days. Maybe it's just because I am so used to the workflow within Sonar, but I really can't picture using a different DAW. Especially these days, Sonar is so packed full of free plug-ins and software synths that is such a ridiculously good value. I really think this is by far the best DAW out there, I will stand by that. It's an extremely good value for how easy it is to get pro results and for how much bonus software you get. I would make the same DAW choice again if I had to.