Tough subject, Mitchell with those lights in the FOV!
I like the HDR processing on 5 and 6 best - the HDR glow is noticeable between the roof and sky in the others.
That glow around objects is the HDR artifact that I look for most. If I can't see it, it's good!
Just a composition tip. for architecture shots like 5 and 6, try to get the base line of the building (or apparent baseline of the building) in shot and either parallel to the bottom of the frame, or in line with an obvious vanishing point
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Do you use PS? Another tip to try with architecture is to use the warp tool to straighten the building up a bit so it doesn't look like it's laying back so far... you've obviously had to get very close to the building to get these shots, so I wouldn't expect you can achieve much with warp though
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Al.