I like to quote something here.
Last day,
I was seeing video. Which was a presentation by Mikko hypponen(CTO of F-secure) at some college. In the presentation he did speak about pdf attacks. At the end of his presentation, one of the audience got up and asked : What software do you recommend? So mikko said,We stopped recommending softwares to people. The questioner asked again : Why? Mikko said,We did a mistake before and we don't want to repeat it. When ie was the most used browser, hackers and malware writers started targeting ie... so people asked what other browsers to use, then we recommended firefox.. now, that was the mistake we did.. because of that, user base of ff grew, but virus writers started targeting it. But instead if we had not recommended any particular browser but given a list of browsers, the users would be distributed among them and so the writers wouldnt targert the browsers so much like we are seeing now. Same is the case here. So we do not recommend any particular pdf reader.
Disclaimer :Above are not exactly the same words of the speakers but they conveyed similar info.
nmb