How many of you affiliates use a publisher's landing page if they provide one as part of their tools as opposed to putting together your own?
Yeah, it doesn't matter, because in the end -you're going to have to add unique content to it - which is what quality score crap and search engine crap pays attention to anyways.
I prefer to do it myself, because I've proven time and time again that my copy and formats converts so I feel safer that way. But as ExpertForumGuy said it doesn't really matter.