The 5D I think is the best you can get for price-performance-weight.I would not trade it for a 1D because of it's exesive weight, unless you want to use cheapo plastic lenses!
Though I must say that the 5D has failed two weeks after warranty expired I find it a great SLR, and I will get it fixed, and out an about again!
weight isn't important to anyone.
I just took my 1D on a 14 mile day hike and a 10.5 mile day hike, both with almost 3k' elevation gain.






