I need a bit of help understanding the different types of links and which ones are best for SEO. Which is better, a deep link or a link to my site's home page? If I was to buy a link from a PR 5 site, would it be more beneficial to have that link on their homepage or on a page within that site which receives the same amount of traffic as the homepage? ie would it be as beneficial to have my link on a 'links' page of PR 5 site as to have it on the homepage? Are sitewide links any good?
I think the thing you should consider is, having link with high PR and get those related to your site.