I have a Benchdogs router table extension on my saw, but didn't know they made anything like parallel guides.  
By thin stock, are you referring to narrow cuts?  I have both the Woodpeck and Festool guides and use them both for narrow cuts.  Whichever gives me the most board under the track is the one I use.

Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner