Both Summarize and Magazine 686 look great on Chrome for Android with a mobile layout. Magazine seems like it would offer better hierarchical organization and navigation of content. Bootmagz has no appropriate layout for mobile and needs to be disqualified with gasoline and a match.
Edit: Now that I look properly on a PC, I notice that Summarize offers bread crumbs for navigation, while Magazine 686 does not. It'd be handy while reading a review on a subwoofer if the user could click a bread crumb to view a listing of all subwoofer reviews; or while reading an explanation of the subwoofer crawl, click a bread crumb to list all tutorials, as a couple of examples. Could bread crumbs be enabled on the Magazine layout?
If not, I guess the tag and category lists on the right column of Magazine will do. But man, it's not a clear-cut victory either way after closer inspection. Magazine is more aesthetically appealing, so I'm comfortable with my vote for Magazine. I think.