So drop the "All things need maintainance argument" seeing as MIXCRAFT needs NO MAINTAINANCE
Sonar needs no maintenance... but your PC certainly does.
PCs are mechanical. All machines require some level of maintenance to run at optimum performance.
Car, tape-machine, etc...
If you can't boot your PC, it's not Sonar's fault (or any other application).
That is a hardware/driver problem. To say otherwise speaks to inexperience.
X2 is by no means flawless, but many folks (including myself) use it without major problems.
I have numerous Pro level clients using it to produce/mix records, audio for television/film, etc.
Don't tell me... these folks are all "nitwits" and "fanbois"... who just don't get it.
So the PC that could no longer boot because of Sonar...
Installing MixCraft solved the problem???
On a serious note, if you like using MixCraft, more power to you. Use what you like/prefer.
But note that your experience does not speak for everyone.
I don't need to be "enlightened". As someone who owns most of the popular DAW apps, I know what works for me... and what I prefer.