2005 chevy silverado 5-7 drop vs 4/6 drop

I am looking to buy the 5-7 drop, but what is the differentce?
 
i understand the 4/6 comes with lower arms and a rear flip kit, 
 
and the 5/7 comes with upper arms and lower arms, do the upper arms really give you a 1" drop compared to the 4/6 drop kits?

 
im looking at DJM AND BELLTECH KITS. 

any help anyone?

I would like to know too ? ? ? ? ?

um....... yea i would assume ur just paying for the extra inch! lol   im sure the diff between the two is 1 inch if im wrong just send me a right back! lol

is it worth the extra inch?

thats your own personal prefernce bro! i did a quick search and AVS has both and the diff between the two is $250 dollar. but thats just the kit, enless u plan on installing it urself  u have to pay to get it installed as well!

The 4/6 kit comes with lower 4" control arms and the 6" rear flip kit.  The 5/7 kit comes with 5" lower control arms, upper control arms and the 7" flip kit.  All the part numbers are different for the individual parts.  Jobber on the upper control arms are $330.69 ($250) but the other parts are the same price regardless of what size you get.

why not order the flip kit, 3 inch coils and spindles?

well also consider what size wheels and tires your gonna be using....           i have 5/7 on 24's and it rubs a bit so not exactly the best daily option  but when i had 22s it was awsome no problems

thats another thing to consider. good point.