That is GREAT news, indeed! :)
Please note that the small ASIO Buffer Size will be great for tracking (recording), but when you finish your tracking and editing, and begin mixing/mastering, you will need to alter the buffer by making it quite a bit larger - to accommodate the much higher latency-producing plugin effects such as Boost 11 or Perfect Space Reverb. Some folks use an ASIO Buffer as large as 1024 or more for mixing/mastering. This is because these kinds of effects use something called 'look-ahead' processing, or otherwise consume vast amounts of CPU.
Soooooo, the bottom line here is that you will need to switch back and forth on the ASIO Buffer Size, depending on what you are doing in Sonar.
I am quite pleased that you have gotten your current latency issues resolved, and hope this inspires your creativity and productivity with Sonar.
Bob Bone