Comparison of various antennas
LinkBottom line, the Bat-wing with the add-on out performs any other antenna.
I've worked, both professionally and as a hobby, on Antennas and there are few basic rules.
*) Omnidirectional antennas work equally badly in all directions (ie directional antennas outperform them)
*) There is nothing better then height. ie the Crank-up antenna works better then the antenna 6 inches above the roof.
*) Bigger works better then smaller.
Our current RV came with a Jensen "flying saucer" Antenna, it doesn't work very well.
I did a bunch of testing, and confirmed that it was properly connected and working "correctly". Only a random chunk of wire, connected to the antenna roof lead-in picked up more stations.
The Bat-wing on the old RV (same location) picked up even more stations.
The Radio-Shack saucer Antenna I bought to use brings in even more. But then it's bigger.
2008 F350SD V10 with an 2012 Arctic Fox 29-5E
When someone tells you to buy the same rig they own, listen, they might be right. When they tell you to buy a different rig then they own, really pay attention, they probably know something you don't.