Jerry, I posted elsewhere, but there is a great new update, as of last night, for Big Photo! You can now export with full, original transparency retained, flip, and rotate images. The batch processing is an in-app purchase.
Liquid Scale is an app I accidentally bumped into, a while ago – it is a cool little app. I hesitated, because it has not been updated in a while, and then I saw a recent (at that time) positive review by Paul Caponigro. That was good enough for me.
Your tutorial was, as always, very helpful, especially the noise comparisons. I agree with you, about prefering to control, through masking, the areas of noise repair. I appreciate your objectivity, and analysis. Thank you for taking the time to do this, it benefits all of us.