I'm getting ready to order some bed rail fasteners. I'd prefer that the
fasteners not be visible from the outside of the bed, i.e. no bolts.

I used this style in the past (~20 years ago) and really like them. They've
held up well and pull the rails in tight. I'm considering using them again,
unless someone has something they like better.

http://www.rockler.com/heavy-duty-wr...ck-select-size

I also ran across these which look promising:

http://www.rockler.com/locking-safety-bed-rail-brackets

Any thoughts on which one would be better, or maybe even something else?

Thanks!