Most modern western aircraft have somewhat of a dihedral to their wings. It seems as we go forward in time, the more pronounced it has become, ie, the 787 and 777. The MD-11, DC-10 seem not to have much of a dihedral, in fact, they are fairly flat. However, I've noticed that some Russian Aircraft, mainly the Tu-154 has a definite pronounced anhedral and it's wings are mounted on the lower fuselage.
So I'm wondering, what are the handling differences between the two? I know part of the reason for x-hedral is to have more stability in a turn, or so I was told in the tech ops forum, but is one better than the other?
What has been the reason for the current trend for the increase in dihedral in modern aircraft, especially widebodies? Engine size?