For inside info (recruiting intel, closed practice reports, etc), there's no competition, it's scout... Bill Greene & Nevada in particular. This is what drives membership. Not an opinion, it's how it is on every team premium board I've been on, OSU, UM, PSU, etc.
All three sites have pretty good sets of reporters. Scout & Bucknuts seem to have more reporters than Rivals. In terms of volume of interviews, you can't go wrong with any of the three.
Scout has the best network of analysts imo. Rivals has good guys too, but the midwest guys are generally ignored in terms of the national recruiting lists, etc. Scout has Bob L, Allen Trieu, Dave Berk with major presences in the midwest. The guys at rivals do a good job but simply don't get the kind of support from national guys like Bobby Burton. Go read the Mike Adams debacle for a taste of that disconnect.
Bucknuts has scoutingohio.com, which is a great resource, but I believe the videos are free. Gary goes out to a lot of local schools for photos/interviews, more posed shoots on that site.
Rivals has the best multimedia for national recruiting. Their videos & photos tend to be better.