I am in need of microadjusting my autofocus for a couple of my lenses with my Canon 7D. Namely, I need to adjust the 100-400 L lens, which seems to consistently AF a bit softer than I've seen from other users of this lens. I've heard of both LensAlign as well as FoCal. I like the idea of FoCal, which can automatically configure supported camera bodies with the necessary microadjustments for the tested lens, but they seem to require that you lock the license to a single camera, as they require you to enter your camera serial number when you purchase. I've heard good things about LensAlign from professionals, however I have not been able to figure out whether it actually automatically sets your cameras microadjustment setting for you, or whether you have to enter it manually. Its a bit more expensive than FoCal as well, and I'm curious of the cost is warranted or not.

Anyone have any experience with these products, and if so, which one produces better results?