Not that bad, but would better if the intial dialog window would be bigger and resizable.
All the features are so disorganized and hard to use, for example to sharpen a resized image you need to go to an extra second dialog window each time and edit it there. That seems a bit stupid to me, because if you make an image smaller (first dialog window) it nearly _always_ needs a bit sharpening (second dialog window). That's _one_ step: Resizing & Sharpening, - but in ImageWell you have to go throu _two_ dialog windows just for that.
And I don't like the image editing tools (contrast, etc.) to be inside the edit window, they are to small, you can't handle that tiny sliders there if you have a high screen resolution.
You make to big steps if you move the slider only a bit. To use the sliders in a sensitive way, they need to be longer, I would put them in a moveable tool palette (Here is the place for a second window, just combine the first two dialog windows into one resizable window and put the tools in a floating window.)
The next thing I don't like is the long time till you see changes, the time it needs to redraw and show your changes is far to long. If I drag a slider I want to see the changes immediatly.
Next: All is so tiny, is this app designed for 640 x 480 screens?, It's an OS X app, who uses such small screen resolutions on OS X?
And, very important: where is the tool for correcting the white balance? Only contrast, saturation, brightness, but on many images you need to change the white point a bit. That basic feature is missing completely in ImageWell.
My conclusion: ImageWell is to disorganized for me and on big screens not useable, the app needs a redesign for a faster and better workflow.
I stay with GrahicConverter (Althought I hate GrahicConverter's interface as well) because I get so much more for a little bit more money. And for the smaller tasks I use the fantastic freeware PhotoToolCM (to poor that I can only use it on my PPCs, I would prefer to pay the 20 dollars to the developer of PhotoToolCM if he would make it Intel-ready.).
That's my review, like it or not.