Recently purchased a NEX-6 and am intrigued by its focus peaking feature for use with manual focus lenses. However... there are so many choices I have no idea where to start. CameraQuest has all the Voigtlander choices, KEH offers some great choices...but after reading the plethora of forum posts about manual focus lenses.... I'm completely confused. Where should someone start if they wanted to pick up a couple of manual focus lenses?