I have not handled or shot the 5d, but it has a very good reputation. Isn't it rather pricey? That said, don't be afraid of used equipment. At least half of everything I've purchased has been used.
The VR in the body is interesting, but if it were the best solution, I'm sure Canon and Nikon would be on it. See, problem with VR / IS, if you don't need it, you don't want it. It adds complexity, and all things being equal, VR is a means of last resort. You'll have better pictures with a tripod or monopod, and the lenses are simpler with fewer elements if you don't have VR. Less is more when it comes to the elements in your lens.
1999 e46 328i Ti Silver / Black[retired]
2007 e90 335xi Jet Black / Black[retired]
2011 e70 X5 35d Vermillion Red / Cinnamon
2011 e92 M3 LeMans / Fox Red extended