I would say the GL but since that doesn't fit in your garage I would probably go with an Escalade/Tahoe/Suburban/Yukon. They are extremely spacious and have most features our BMW's or MB and Audi have. If performance is an issue there's definitely plenty that can be done to those cars. My cousin had an 07 Avalanche which is basically same as Tahoe but with a bed and that thing was a beast.
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2014 X5 xDrive50i Mineral White | DinanTronics Stage 1 | Vossen HC3
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