Frustrated by lack of a simple ACDSee equivalent for OS X, I'm looking to hack one up for myself. I'm looking for a gui library that accommodates:

• Full screen image display
• High quality image fit-to-screen (for display)
• Low memory usage
• Fast display
• Reasonable learning curve (the simpler the better)

Looks like there are several choices, so which is the best? Here are some I've run across:

• PyOpenGL
• PyGame
• PyQT
• wxpython

I don't have any particular experience with any of these, nor any strong desire to become an expert - I'm looking for the simplest solution.

What do you recommend?

[Update] For those not familiar with ACDSee, here's what it does that I care about:

• Simple list/thubmnail display of images in a directory
• Sort by name/size/type
• Ability to view images full screen
• Single-key delete while viewing full screen
• Move to next/previous image while viewing full screen
• Ability to select a group of images for:
  • move to / copy to directory
  • delete
  • resize

ACDSee has a bunch of niceties as well, such as remembering directories you've moved images to in the past, remembering your resize settings, displaying the total size of the images you've selected, etc.

I've tried most of the options I could find (including Xee) and none of them quite get there. Please keep in mind that this is a programming/library question, not a criticism of any of the existing tools.