Do you really want a stand-alone? These are not usually designed for film editing/manipulation, more for straight recording of your favourite TV programs to a DVD with no adjustments.
For editing and mixed media (movies and slides) you ought to be looking at a writer to go in your computer together with the associated software to carry out the required editing. This software is normally supplied with the writer.
I would suggest that you check the capabilities of the available models of standalone recorders and make certain they will do what you want them to before parting with any money.