Fractal Domains offers several options for producing striking variations, and it includes advanced features for producing high-quality images.
The following bugs have been fixed:
Changes have been made to partially correct this. The edit window fractal generation should be very fast now. The background rendering is now probably at par with its previous performance, but greater speed with mulitple cores is still possible for anti-aliased images. Further speed increases will probably be made available in the next version.