retouching PDF files on a Mac

In my work, I often want to make a quick edit on technical drawings that come in PDF files (take out customer names, rearrange sections, details, blend out unneccessary measurements, …).

As a lot of things in OS X go very easy and quick, I am still on the lookout for a software, that let's me do exactly that - nothing more, no overhead.

Unfortunately Apples integrated Preview.app would have the ideal quick and easy UI, but lacks the "cut, paste, delete" functions, to do such easy quick edits.

I use Skim.app as a PDF viewer more than Preview, as Skim has some neat viewing features. Skim lacks the mentioned edit functions too.

I am forced at the moment, to use Photoshop CS3, which gets the job done perfectly, but forces me, to jump a few hoops, I would like to save for an even quicker workflow:

After opening, I am presented to an import dialog - unnecessary.
When finished with editing, I want to make a quick save on the original file (⌘+S) with the same compression, the original file came with. PS ALWAYS presents an extensive dialog, how to output the file and ALWAYS asks me for a file path for saving.

What software do you know for Mac, that:

-opens any PDF file in any compression, coming with the original file
-has zooming via "⌘ + -" and "⌘ + +"
-has basic editing functions "delete", "copy", "paste", "cut"
-has a quick save function, to overwrite the original file after work (dialog "Do you want to overwrite…" is tolerated though).
-compresses the saved file in the same way, as the original compressed PDF file comes

Remember, the work gets done sadisfactory in PS CS3 - there are just these little buggers, that make batch processing of many files a pain (costs me 30% more time, than without them).

 

Thanks for the tip Jessica.
I tried Adobe Acrobat before (mis)using Photoshop for PDF editing.

Acrobat clogged up my hdd with almost 1GB of application space , was very slow and sluggish and outragiously expensive for what I need to do with it. It was fired after 2 weeks.

Skim does all the functions, I needed from Acrobat, except the editing.

I will look into your suggestion.