Well, I have just finished reading Birthright for the first time and I have to say, I thought it was simply superb. I found it very easy to sympathise with Superman in this story, because they made him so human, and this isnt always the case in Superman comics. I felt a lot of Superman in this story was actually presented the way he was in SR, which I loved, but I also found it very emotional, especially towards the end, and that last shot, we he manages to tell Jor-El and Lara that he did in fact, make it to his destination, made me get a lump in my throat.
It was very emotional and the perfect way to end the story. Sure I could have done without such things as soul vision and Clark being a vegetarian, but overall, I found the story totally spot on. One of the best Superman reads I have had in a while, highly recommended to anyone who hanst read it as of yet.