App for editing PDFs on iPhone?

[hunoosh]

I'm looking for an app that will allow me to edit PDFs etc. I have docs that are hard copy I need to scan them to my iPhone. Which I've been doing and saving on Dropbox or another app. However now I need to copy and paste part of the scanned doc to another app. Hope this makes sense :-/ I only need parts of the docs therefore need to cut and paste. Is there such a thing?

 

[Brickman]

GoodReader is AWESOME on my iPad. I have not tried it on my iP4. I guess it would work the same.