What's the difference in these diagrams for FX Loops?

[GusChiggins]

I have searched this site and found different diagrams for true bypass FX Loops that apparently all do the same thing.  I am wanting to build a 2 loop pedal with LED's and a DC input and I just want to know which one of these will work properly.  I don't want to be able to use the loops simultaneously, actually, I guess what I want is one loop and one tuner out.  Here are 3 different diagrams I have found:

http://aronnelson.com/gallery/The-Mod-Zone-%21/WIRING_2_FX_IN_1_BOX

http://www.singlecoil.com/tb-strip/dia4.html

http://www.diystompboxes.com/tbbox/tbbox.jpg

I have noticed that the last one, from this site, is the only one that has a stereo input on it;  all the others only have mono jacks.  What difference does this make?  Any help would be great as I already have all the parts I need.  Thanks!

Gus

[thumposaurus]

The one with the stereo jack is show only running off of a battery, the stereo jack will switch the battery off when nothing is plugged in.
The other two the one is shown working off of a DC jack, and the other one doesn't specify. 
Other than that they all look pretty much the same you would just need to decide how you want to power it and pick the one that matches.

Somebody correct me if I'm wrong