I don't really like either, Sorry mate.. i think on the first one, giving a 3px stroke to the arrows, borders, etc is a bad idea. I only use 3px stroke with extremely low opacity. I also think there's too much contrast between the black background and white content boxes, and that the content boxes need some work. Also maybe you could think of using some custom fonts, etc. Also, although the pattern in the background is nice, you havent used it properly imo, and honestly I think it doesnt make the bit with the arrows and boxes on it stand out enough. Maybe you could lower the opacity on the pattern background or make it darker.

The second one also needs some work. The gray youre using for the menus is too bland and you should probably go for something darker or lighter. Also, again, try experimenting with typography, and get some new fonts. I can't really think of anything else to say on the second one :P

Anyway, keep trying