1,2, & 3 are pretty nicely done for HDR, as it's probably one of the most incorrectly used techniques in post processing. you've got a couple of blowouts through the ceiling, which tends to lend the cartoony feeling that isn't very visually pleasing. yours aren't cartoony at all, but those are elements to watch for. manual hdr (bracket and blend) produces much better results in my opinion. with that said, the composition and lines are nice, as well as the tones. i'm particularly drawn to #3: there's a lot going in on that image, but you did a great job of drawing attention to the windows, which give the image an ethereal feel.
4. i feel like there's something missing in this photo. the composition is nice, but the global warmth doesn't allow the other tones to shine through.
5. sunglare! when you can't beat em, join em. the subject is interesting, but the glare isn't strong enough to put the drama in the photo that sunglare can do. i'd have maximized this by taking off my hood, and bumping it up in post.
6. photo isn't sharp. good composition and lines.
you've got a great eye and you know how to visually direct the eye where you want it to end up. nice job!
(i LOVE LOVE LOVE 3. i'd actually hang that in my house, and there isn't an image that i didn't take hanging in my home