the best systems i ever used (and i used A LOT) seem to be these type with the quick camera type and that printer type here: http://www.wolflabs.co.uk/UVIdoc_Gel...ion_System.htm
I found digital cameras give a pretty good picture sometimes, however they are VERY SLOW especially when hooked up to any computer (VERY VERY SLOW)...also printing is a problem as even with a high quality inkjet it is quite slow and low quality (non glossy, wet it becomes mush etc)
That UVIdoc type of camera setup prints out on glossy paper that you can easily scan cleanly (without ethidium etc) on a high resolution scanner and get really good documentation of your gels quickly.
I hated the digital camera/software/computer setups for their slow start times, bad printing and other reasons.
I couldnt find the one i used, but the UVidoc is basically identical to what i used but probably more expensive.