I'm brand new, so my opinion - for what it's worth - is that I like both of them.
The first one shows more of the grandeur of the building, but I really like the symmetry in the second. (Seems like I'm in the minority, but oh well!)
In the first, I do agree with those above about the cars. (I'd looked at it last night after you posted, but was afraid to say anything! lol) Anyway - the wire and cars cropped out is nice, but it seems shorter somehow... Maybe it's the front door?
In the second, I like how you can just make out the star & cross between the two towers. In the large version, it looks very nice. I would think a bit tighter crop on this pic (vertically) might add some of the diminished immensity (Is that a word?) back to the building.
I just wanted to say I think they're both really great pics of an absolutely beautiful building!