For me it's simply a half glass... Neither empty nor full...
...and I seem to be in the same boat as Jlien X... Most of Sonar rocks! I always have loved the system... And even the new UI... I have found my peace with most issues... But I depend on fast access to constantly varying zoom needs. It worked great for me up until the Lanes feature was implemented... Now some problems are "as intended" limitations and others are bugs... And it severely hinders my work.
If these issues could be corrected/adjusted I would be back to a good workflow... This issue is even more important to me with the X UI ... as it's layout makes less visible data on screen than with the original interface, so I am always Zooming somewhere! ;-)
I truly hope that the Bakers realise the importance of this issue... For many of us...
As to the other DAW softwares? None of them come as close to my needs as does Sonar!
Keni