I prefer the first one I must say, I like the crisp modern look
To improve the second one, i'd say just make it a bit more simple. Don't get me wrong here, i'm no GFX artist, but I just think its a little... 'busy'. Too much going on, too many different backgrounds, different fonts, segments, font sizes etc. I like the first one because its very uniform, stylish, crisp.
Nice work though, you make some nice designs