Id go ahead with the first one.
Though id suggest you add some more ram into it, preferably DDR3, as both of those are DDR2, and a low amount at that. You might also want to add a little bit more powerful powersupply depending on what your wanting to do with them, though with casual gaming, 450watts will get you by. On the first one: Unless you intend to hoard a lot of movies, or games, the 1TB hard drive is very unnecessary
What are you intending to use them for?
EDIT: I couldn't find any info on EITHER of their graphics cards?