Both X5s show number of miles that suspension and other normal wear items, are not many miles from when they begin to cause problems. The exception is if some of those items have all ready been done. Can't tell if you plan to end up with both X5s. If you are going to end up with one, I would go with the 2005 as there are improvements and features that you will enjoy or benefit. Also, at near 200,000 the potential fail of costly parts or repair is much higher

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas