Mvic,
Here is my take - if the 2nd system (Dimension 2400 P4 2.4Ghz 533Mhz FSB) costs $1,000 less, take it. You may need to replace it earlier than the more expensive system, but not much sooner - maybe 4 years instead of 5 at most. However, for the $1,000 that you save, you will be able to...