I ditched an allroad 2.7T to get my X5 4.4, and honestly, there is no comparison between the rides. One is a car, the other is not. While the allroad is a nice ride, in fact it's a very nice ride, all things being equal, get the X. As noted above, the turbo engine is a problem long term, the suspension is surely a oney pit, and the X5 4.4 will get better mpg (why the turbo v6 gets such bad mileage amazes me). I have owned 6 Audis over the years (I own one now and love it), but the X5 is the better ride. Though the allroad will probably be cheaper to get into.

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-'13 E93 M3 Cab, Interlagos Blue, Carbon Black leather, DCT, all options, and fun, endless fun!
-'13 X5 35i M-Sport, Carbon Black & Cinnamon, Dinan Stage 2!
-'15 Toyota Sienna Limited Premium AWD, Silver & Grey, Nav & BluRay, and less lame than the 2011 it replaced
-'07 Mini Cab S, Laser Blue, 6sp, endless fun that ended (sold)
-'04 X5 4.4i, loaded, loved, modded and sold