I have had both now for a few days. I suppose I discovered on my own what most of you already knew. I wanted to prefer the Oregon because it was smaller. But, the Savanna is brighter, clearer, and a little sharper than the Oregon. I used both in various lighting conditions, from daytime, to dusk, to night... indoors and out. Depending on what I was looking at, the Savanna was either just a little better, or very noticeably better. The Oregon view, for lack of a better description, was a little duller than the Savanna. Another thing I liked about the Savanna better is the main focusing wheel. It has a little more resistance than the Oregon, so I felt like I could make better fine tune focus adjustments. The Savanna does not come with objective lens caps that stay on, which I prefer to the supplied ones which clip on the neck strap, so I ordered some from Amazon.
The Oregon is obviously smaller, but for my use the size difference does not matter.
I also did not pay attention to the difference in the field of view, since that is also not a factor for me. The Savanna did not seem like I was looking through a narrow tunnel.
The Savanna was also slightly easier for me to use, meaning most of time I did not need to adjust the positioning very much at all. It seemed like I needed to do a little more adjusting with the Oregon. The Oregon seemed just a little more particular to eye placement than the Savanna.
BTW, I did look for some birds (considering what forum I am on
, but they have mostly left where I live this time of year.
If I wasn't comparing the Oregon to the Savanna, I probably would have thought that the Oregon was fine.
Anyway, after learning a lot on this forum, glad I could contribute back a tiny bit.
Thanks