Irrenarzt

Recipes 

Sawgelok is the best but they cost 38 bucks each, and that doesn't include a male/female combo. So prepare to be bent over prison style. But 10 balls per QD assures a solid connection. And they are smoother than something I probably cannot mention without being banned.

If you can find them on ebay (they do pop up occasionally) then that's the way to go. The More Beer ones are a good choice and I would go with those if the Swagelok ones weren't available.

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In Queue: Sour Blonde, Kriek, DIPA, Wee Heavy, Dubbel, Double Nelson, Milk Stout

Fermenting/Crashing: Session Porter, BDG, Cream Ale, Cider, Munich Helles, Baltic Porter, Wheat Wine, Sour Quad, Apricot pLambic

Kegged/Bottled: Flanders Red, Hopped-Up Saison, Brett Saison, Bourbon Barrel Milk Stout, Bourbon Barrel-Aged on Montmorencies Quad, Tripel, Raspberry Melomel, Rye Barleywine

H2oWerker

Recipes 

We use those couplings at work EVERYWHERE! They hold up great to extreme chemicals/conditions, are easy to use, and easy to modify. The only drawback I've found w/ them is that you cannot mix-and-match between manufacturers even though they appear to be identical to the eye.