There is no better editor if you buy the super plugins 'Image manager extended' and 'Media plugin'. This allows you to batch upload images, rezising on the fly, and creating tubnails too. Only ting i wish for is auto-renaming images to awoyd spaces end spesial charaters.
Easy to style and translate, to fit your webpage. Its the prettiest calendar I have discovered, and that matters for the webpage design.
The backend is very simple. Just click start and end date. Thats it. Perfect for my customers.