For what they are, the Brophys are a decent product. They're definitely tempting at $173 for a set of 4. Key thing to keep in mind: the Brophys mount to (and are only as strong as) the thin sheet metal in the truck's bed. Might be an acceptable option for a very light in-bed camper.
Torklift frame tie-downs are fabricated with 1/4" and thicker steel plates. Most importantly, they're mounted and secured directly to the frame of the truck. Another plus, you can remove the extensions (in seconds) so there's very little visible when the camper is off the truck. Downside, they cost $700-$800 for a set of 4.