I see what you mean -- too many choices! lol

It's typical of Safer Networking to enlist lots of other sites like SecurityWonks and Grail It to help distribute their programs and updates. Chances are, any of those links will work. Safer Networking's own servers are in Europe, probably more "hops" from here than some of the others, though European users might prefer them. I once had some updates from Grail It arrive incomplete so I've personally taken to avoiding them although they've probably been fine ever since. Meanwhile, by luck or otherwise SecurityWonks has always worked well for me so I favor them even though, for all I know, other sites are better.

I tried clicking on the SecurityWonks "Download here" button and got taken to a securitywonks.net page that features a download of Spybot S&D 1.6.2, the version I currently use. It's 15 MB, so if you don't have a fast connection better plan on having your computer tied up for an hour or two.