That second one is really good. Well thought out and well composed, nicely exposed. Nothing wrong with that second one. I really like it.
I also kind of like the first. Neat, colourful abstract. I even like the dotted lines in amongst the "just lines"-lines, livens the picture up somewhat.
And that last photo would possibly be one of the very first that features noise and blurriness as their attributes that I really LIKE!