A few thousand low PR links (from different sites on different IPs) with anchor text that uses several variations of your target search terms is a lot better for ranking high in the SERPS than a handful of PR6 and 7 links. This has been and continues to be my experience at least.
When I do a search for my keywords, I see links to my site (I still can't find my site though). When I do a link:mysite it shows nothing? If you aquired theses links this past month, will they show in the next PR update?