I am running Sonar 7. Others are using X1 version after I guess 8.5.3 whatever.
I could upgrade but for now and what I do, it is enough, and I have an older computer (32-bit XP).
I don't think everyone has stable drivers for audio interfaces for Windows 7 yet, so some are lagging behind.
Always can use I guess Music Creator 6 version (I still have version 4 but only can record in 44100 probably 16 bit).
I can go up to 24-bit with Sonar 7 and with my new audio interface - 192kHz sample rate but always you end up making
it 48000 sample rate or 44100 rate since videos and CDs only handle that and still at 16-bits.
I don't use plug-ins as of yet, perhaps someday I will, probably not, not that they are bad, but they cost a lot,
and I probably would need a newer better 64-bit computer to do that, and still some of those are not all that great
either yet.
Some comes with Cakewalk but I haven't use any plugins.