I take it all back, with the greatest apologies to Jay Teo, EasyCrop is the *Queen of 'Easy' image size and selection for many purposes, and my rating is 5*.
* Is software female?
Jay Teo eventually replied, probably after a well-earned break, and suggested I check the Constraints - i.e. I found I used Custom Size whereas what was needed was the Custom Ratio to fit my display, 8:5. All well and BEST Image Utility including v. 2.5.5 working in Lion.
Sincerest apologies, Adrien UK
[Mac Pro did its own brain transplant after a normal Restart & changed all settings, and I was NOT alert to EasyCrop's subtle settings.] *****