First one - try to blur and desaturate the background a bit. It is way to attention-drawing, and takes away from the main text of the banner.
Also white colors on such a colorful and detail-filled background don't quite add up.
Second one - This is just a personal opinion, but the angle of the main text feels weird. Again this is more of a preference thing. Also, the top left corner is a bit illegible, try to at least add a drop shadow effect if you don't want to change the position of the text.
Third one looks neat.
Cheers and keep it up