I am checking TVFool now. My zip code is 52328. At first glance, it confirms what I already thought I knew. Namely that half the stations I can receive are SE of me and the other half are NW.
Thus, my research into omni-directional antennas.
I am not able to spend too much time and effort mounting and fiddling yet. So I figured an MS-1000, mounted on the pole which formerly held the DISH Network dish and plugged into the coax the dish used would be a fairly effortless solution.
However, I found a good deal on an MS-2002, which prompted my question. At the time I posted this, I had not bought it yet, but now I have.
What you say about plugging the power injector in on the inside of the house makes sense now that I think of it. I have plugged the MS-2002 into the TV inside the house to test it (using the power injector), and it seems to work. Now I will take it outside, and try my "dish-replacement" mounting idea and see what happens. Wish me luck!
Thanks for the response! And if you see an obvious hole in my logic, please feel free to offer any other advice. Thanks!