I've always used PPC EX6 Compression F-connectors, I've found them to work very well, and it's an added bonus that they are rated for dual or quad shield (so they work great on the Belden tri shield that I always use). I was also happy about them because around here the Fios, Comcast, and Cablevision installers use them, as well as many of the newer satellite installs I have seen.
The connectors have always said "PPC EX6 06" on them. I recently ordered more from a reputable online vendor, but I found that they say "PPC EX6 07" on them. O the plastic part the 06 says "XL" then underneath it "14". On the 07 is says "XL" then just "4".
Other than that they look the same and installed just as well. Does anyone know the difference?