I'm trying to decide which one if either that would be best for me. I cannot find a good source that shows exactly what software comes with either one. I would need sbs 2003 and the xp software for sure. I want to use the software to set up and learn client/server networks in my office and understand that these are basically used for that from what I've read. Which do you guys think would be the one to buy? Or can you direct me to a list of software that each comes with.