Designs 1, 4, are all very dark, and you can't easily see the details. That's not good.
Design 5 is gradient, and isn't very professional.
Design 3 is different, and doesn't look too powerful.
Design 2 is perfect: It's bright, powerful, and nice details.
Honestly man, you don't have to be so harsh. If you dont want to offend then why couldn't you have just stated you disliked them instead of insulting our efforts?
If you want me to be completely honest, I would probably not buy any of these decks if they were on store shelves. However, I would have to say 3 is best in my opinion, and 5 is close behind it. The others I did not like much, and these are alright. I think you guys should try to come up with a better design, however, these are pretty well done. I would work off these. Plus it is a good first attempt.