I just finished up my first and only playthrough of all the episodes. I didn't realize it was tough to not bring Omid and Christa along when you went back to the sewers since I ended up going along (and losing a piece of me in the process!).
Some things I recall:
I pushed Omid
I rescued Christa first
I took Clementine to Crawford
I hid the bite
I said I needed to go alone
I played a good guy in general. I was always upfront and honest with Clem. I felt Omid was going to die and turn which is why I took her to Crawford. I also talked to all characters at every opportunity.
I was most surprised with my Ep4 results. I was only in the 32% minority who let Ben go and only 19% minority who hid the bite. To me, if this was a movie, no way does Lee reveal the bite. That's a plot suspense point that would be shared with the character and audience until the end. I'm surprised I was in the major minority on that.