not a fan of the frames... and these messes up your photos big time! but guess that you did not post to hear about frames when it comes to your photos, I like number 4! I do not know about number 5, but I think i would like it more if more of the image was sharper and not just a green blur..
Cool kats like #4 I do agree with 889Media, though, the frames are a bit iffy. Also, I do like the blur effect, but not on #5, its a tad overdone. Overall, it's a great set of shots! You did find some different subject matter
Blur can be very effective, but usually more so with simpler compositions than these. The last probably is the one that works best, although I'd probably crop some of the brighter area at the top and maybe a little on the left.