holga light leaks are easliy remedied - only takes 5 minutes to fit a bit of light proof material around the seals and to tape up several points inside the camera (not all need this though - depends if you get a good one or not). I spray the film chamber with matt black paint too - you get less internal reflections and a purer image that way,
It is excellent fun to tinker with Holgas - I love 'em. And the soft plastic body makes it really easy to attach things.
I would definitely recommend one.
(BTW - thanks for the plug ann!)