I took the plunge and upgraded the drivers. Seems I can go down a notch with the ASIO drivers. WDM are a pile of you no what!!!!!
I could go down to 192 buffer, now I can go down to 128 with no pop or clicks. Glad they are still working on the drivers.
It does suck that Cakewalk and Alesis can't get together and sort this thing out.
I want to upgrade to Sonar 7plus, but can't afford to buy Sonar 7 and then have to buy another interface

to have it work.
I know in the future I'll save my pennies and buy either MOTU or RME and be done with it.
Ed