After due research I decided against the BMW X5 and the Mercedes GL320 in favor of the Tahoe LTZ, based on total satisfaction on my previous 2002 Tahoe. I am very satisfied with the choice and I saved $25,000 over the others. The Tahoe so far exceeds anything I experienced in testing out the BMW or Mercedes. The fuel economy should improve as I break in the engine. Recommend this awesome car! Also recommend the sun and sound options with the LTZ that includes the rear camera, DVD, Navigation system and sunroof.