Hi, I use the first one of yur pictures XODO PDF. And I open my word and PPT and excel documents in Polaris office, which is installed on the Samsung note 10.1, and then I even can write in these documents.
Hi, I also have a Samsung note tablet and I just installed Xodo, it's free and lets you annotate PDF's with the S-pen or the keyboard. It works great. Just add the pdf to Evernote and open It from within Evernote in Xodo. From Xodo you can go back to Evernote. Works just like the Evernote pdf function. And is quick and easy to use during meetings.