XC90 D5 2009 Momentum vs. Summum

Good morning forum, yesterday evening my has made me an almost immoral offer. A new XC90 D5 almost in 1-1immediate leasing exchange to my beloved XC70 D5. So replacement of the lease agreement 5 months before the end of the term. The Dickelch would be in momentum equipment with automatic, dark disks, Xenon, Opa-Radar and RTI. Unfortunately without a phone, but as 7 seaters. Color Uni-Black – Leather Anthracite. Now the thing with the fixed installation is not a huge issue, if there is a clever BT plant. My question should I take instead Momentum 7 seater better a summum 5 seater? Family and professional this would also be full enough, the story with the 7-seats is just a nice gimmick, Zg at children’s birthdays. Is there at XC90 actually 4-c and there is the telfon in the summum equipment included? I have seen nothing in the configurator. The question is what the summum large from the o. I am grateful for your equipment.