I have a 5D (original) with a set of full frame lenses that I have had for the last several years. With newer cameras coming out (7D, 6D, Mark 3, etc), I am wondering whether or not I should upgrade. This would be only for landscape photography and I only use primes (with the exception of the 70-200 2.8 IS L).
So should I upgrade? If so, what would be the advantages of upgrading?