I've had both the Sensor IV (current Batwing) and jack on the same 5er camped in the same general areas.  I give a heads up to the Sensor IV, but not by much.  The antenna on my rig was an old batwing and doing the research I decided to upgrade to the Jack and removed the entire old one in place of a Jack.   It was an improvement from the old one but since it  is mounted in the bedroom area and stivks up a good 8" or so, I didn't really like the looks of it.  That changed when I missed a branch going into a State Park in which I found out how easily the Jack snaps off.  That's when I changed to the Sensor IV.