I used Sonar x2a to sound design a feature film, track lay and do foley work.
I had no synch issues with the HD Mov imported into Sonar using the kLite video codecs.
I have also done 4 shorts this year and scored, track layed, designed and created foley.
X2a is more than FINE for working like this.
As Dan says, I will always display in SMPTE, I have snap turned completely off and my movements around the timeline are usually by the "{}" keys for 5 frames at a time or the "left right" keys for 1 frame at a time or I will scrub.
I will create markers for various reasons and hit "goto marker" to whizz around a long timeline if its a feature.
Actually, Bakers, for us film people the ability to zoom out and see the whole timeline on a 1hour30min project to fit to screen would be nice or am I missing something here?
Trailer for latest feature I did entirely in X2a can be found here......
https://www.youtube.com/watch?feature=player_embedded&v=KrMgKHiDpf8 and
https://www.youtube.com/watch?v=fQ7GESTRYiE