Hi Mike
I thought you might be interested in my experience with Griot's Glass Cleaner, which I didn't hold in very high regard until I tried using it with MF Waffle Weave. It made ALL the difference! I KNOW you're not a MF believer (and I certainly don't believe all the hype), but this situation convinced me of the superiority of MF WW as a
glass cleaning "cloth" ).
http://autopia.org/forum/showthread.php?t=72097
My point being is that it might, in fact, be the "cloth" you're using with your cleaner with, rather than the cleaner itself that makes the most difference.