Gimp isn't an art program. It's photo editing software with some graphics and art tools. If these are the only 2 choices, then I pick Paint Tool SAI for art.

I use GIMP. It's an image editor - it's free.

Paint Tool Sai is a paint program - it's not free.

If you like digital painting you can improve on GIMP by getting GPS for GIMP (GIMP Paint Studio) here: http://code.google.com/p/gps-gimp-paint-studio/

My personal opinion is that GIMP with GPS is far superior to Paint Tool Sai, not just because GIMP is free, but because it's so powerful.

Also, if you want to take your digital art a stage further - you should consider a vector image editor such as Inskcape - which is also free http://www.inkscape.org/

Hum I haven't heard about paint tool sai ?Gimp doesn't cost and it has lots of online help if you need it.I like my gimp.

You can download Gimp for free here http://j.mp/1wDtp0l

Gimp is a free, open source tool that lets you create and edit images.

i like paint tool sai better you can get the crack version

I like SAI better...also, you can just get a cracked version for free