I'm looking at a variety controls to bring a selected and returned card to the top of the deck to expand my knowledge and repertoire. I typically just catch a break while folding the spread, talk a bit and then do a riffle shuffle. I've played with using a short key card and then a riffle shuffle. I don't have sources for either of those -- they are just stuff I've come up with because a riffle shuffle seems natural. I like Lee Asher's Losing Control. I really don't like an Overhand Shuffle control. So my question is what control is your favorite? If you can, provide a source.