Help needed about to Purchase 1st X5

[Mr_byers]

Hello all. I have owned bmws but this will be my first X5. I am considering 3 X5s. 2 are local which i have driven. 1 is out of town which i haveny driven.
. 2001 x5 131k miles 2 owners. Near perfect condition. Local car. New tires brakes valve gaskets a/c fan suspension parts. Drives great. Has sports package with 18" wheels sport seats etc..
2. 2006 X5 3.0 134k miles. 3 owners. New brakes on front. New upper and lower control arms and bushing on front. Needs a new head liner. Tires have 20k miles. Non sport. Pano roof. Have driven this car.
3. 2004 x5 4.4 4 owners 154k miles. Minor accident i have been told on carfax. Havent driven. 90% on tires.

As I read 3.0 seems to be underpowered but maintenance is less than the 4.4 v8.

Please provide opinions as I am making a decision by this Friday July 29.