I would like to recommend PDF Studio (Standard or Pro). You can download a free demo version or the full (paid) commercial package from Software Center. The full version is not free but costs $80-$120 depending what additional feature set you need, but if works JUST like Adobe Acrobat, at a fraction of the cost. I found that when it comes to text editing inside an existing PDF file - it is actually better than Adobe Acrobat... They update the software all the time and add features. When I found a bug, I communicated with their tech support, that fixed and sent me a repair patch with 24 hours!