The team at Pixelmator asked me to test the latest version of Pixelmator with its brand new paint engine. Pixelmator is an affordable image editor for Mac with very powerful tools comparable to those found in Photoshop. I gave it a few tests and painted one of their stock models to see how well it compared to Photoshop. I sent them the resluting painting and they have featured it on thieir blog.
Check it out at http://www.pixelmator.com/weblog/2009/03/08/pixelmator-sprinkle-in-action/
Pixelmator can be purchased for £44.07 or $59 at http://www.pixelmator.com
A demo is also available.