You will hear from Brad, no doubt.
Here are my opinions, after closely examining all three (FL, Ultravid, and EL). My wife has an FL, and me and my older daughter have ELs.
Fl brightest and sharpest image, free of color fringing. The image also is somewhat cold, bluish, and very distorted. The center of the field is the best in this model, but there is so much color fringing, astigmatism, and loss of sharpness at the outer 50% of the field, that it makes it unpleasant for me. In fact, my wife is starting to reconsider her decision because of this. The field of view is 420 ft., but it feels less because the image is not good at the edges. It's not a relaxing and pleasant view. On top of that, the FL has the least depth of field, and is the most unstable and shaky of them - its small and light and the image needs adjusted often. The small sweet spot also adds to the shaking feel.
The EL is not the brightest and the sharpest of the three, but it offers more than the human eye can see anyway. On the other hand, it has a very pleasant view - free of astigmatism and bending almost to the edge. Also, this model has the best depth of field. It is also the most stable, because of the superb ergonomics.
The Ultravid has the most color true and the most contrasty and vivid images, it probably is the most durable and strong. It's image has the most color fringing and it has a reasonable distortion at the edges: less than FL and more than EL. It also has a focuser that will take a year or two to become smooth - it will be rough and notchy for a while, or even worse, it will have play and slap.
I would be a happy birder with any of them, but since i can afford to choose and i can afford to change my mind, i choose the EL. My decision was based on: ergonomics and handling, depth of field, the most pleasant and most relaxing overall view, and after sale customer service (nobody beats Swarovski or Leupold).
Whatever your choice, you need to have in mind that center of field sharpness or brightness is not everything. A great birding binocular needs to have many more qualities and you should base your choice on whatever feels good to you. After all, you will pay a lot of money for a toy that is supposed to make you happy. Just be open minded when you go shopping, and ignore the names and the brands.