[Graham Bernard] “What is the difference between a Report’s Omni and a Lavlier Omni?”
At least 8 inches. As you know, lavs are typically mounted on the chest and the distance to the mouth is about that distance. Reporters usually have the mic no more than 2 inches away from their mouth.
[Roger Bansemer] “Why do I never hear background trucks, etc when reporters are next to a highway. I know they hold the mike close but I often see them holding it further away than what my lav mike is which is right at my throat so it has to be something else.”
It’s been my experience that while most reporters use some kind of stick mic, the pick up/polar pattern of the supplied mic varies from station to station.
For example, one local station gives all their reporters short shotgun mics (Sennheiser ME-66 I believe) while the other is an omni mic and there is a huge difference in audio quality between the two. Because these are shotgun mics, they are much more directional than an omni and background noise is greatly reduced. I used its predecessor (ME-80) for several years and was always very impressed with its ability to drastically reduce background noises.
As Grazie has said before, you need to look at the polar pattern of any mic that you’re considering as there are differences that need to be considered.
Roger, I know you don’t want to but you really should consider a head-mount mic. The new ones are very thin, and are flesh coloured so you hardly see them.
As was repeated several times on that forum, the bottom line is that you need to get the mic closer to your mouth to get rid of background noise. Handheld and shotgun mics are out of the question so a headworn model is your best choice.
Jan gave some examples of good quality models and I encourage you to check them out.