Well I am sorry to say that I don't like the big pic that you share but some of them are really good one. I like the pics from xr_127 onwards they seems pretty cool.

Wow very nice background picture.
it effect and color septation was awesome. i like all of then but XR_129 is very nice.

Crystal reflection backgrounds really suits very well and look attractive to. Specially the combination of colors will make it more suitable and attractive.