Thanks for all the help! I miss the RedPower's pneumatic tubes... they would've made this easier, but Logistics Pipes don't seem so hard to understand after all, too
You're going to love TE3 Itemducts in 1.6
When you right-click on them with a bare hand, they pull up a GUI that has, among other things, whitelist/blacklist filter controls. Also, the itemducts can be in extraction mode or insertion mode. So, you can choose to blacklist/whitelist on extraction and, in the same itemduct network, have blacklist/whitelist filters on insertion into another inventory.
It makes for very intuitive, compact builds that just "work".