I'm with you, they appear the same but it's irritating! The newer one I got just seems better made. For example, the old ball joint has plastic lock nut style nuts and the newer one has bigger hardware with actual locking washers and what not.
Like you, I don't THINK I'm OCD, but my truck will feel "lop sided"
Thanks for the input, at least I can be pretty certain they are both correct now.