Hey all, i recently got my 07 ram! Loving it!

I've been looking at lift kits, and I realized I need some help (I'm not installing it, I need help finding one, just cause I know I can find a kit cheaper than any ranch hand)

I've found some 5" kits, but they seem to cheap to be good. I've heard Performance Accessory is good, but i'm not too sure bout this

http://www.car-stuff.com/carparts/do...607467976.html
Would I need to buy any other parts for it?

Now here is my alternative option:
http://www.car-stuff.com/carparts/do...523787262.html
or
http://www.car-stuff.com/carparts/do...79b798354.html (4in)


Would yall recommend one more than the other?
I honestly don't know much about cars, except how to change a tire, so I would really appreciate any help!
Thanks in advance!
Mikey