I don't know what more "oomph" means to you, but judging from the pictures you posted, it looks like your current equipment enables you to do the job quite well. There's no substitute for your own creativity and capabilities.
I'd suggest focusing on what it is about your equipment that's preventing you from getting a certain set of results and identify the addl capabilities you feel you need. That should take you directly the the equipment you require to get to what you think is your next level.
Good luck.

I started this thread in an effort to glean the collective knowledge and experience and so be able to make an informed decision as to which camera I wanted to buy. I also wrote that I did not intend to get a brand war going. Based on these several pages of posts, what I am getting out of it is that neither the Nikon nor the Canon is "better" than the other. Each has its strong points and not so strong point, but neither seems to have any particularly "weak" points. I am finding that each has something for which it seems to do particularly well, i.e., Canon excels in speed of shooting, while the Nikon seems to be good at landscape. As for learning, I certainly am doing that. The personal barbs aren't adding anything to the discussion, though.

The other thing that I am learning is that pixel count isn't so important as is the electronics behind the sensor. Yes, more pixels means greater resolution, but if the processor isn't that great, it doesn't do the resolution a lot of good. Then finally, I am learning from all of this that regardless of how high tech the camera is, none of it matters if the user doesn't know how to use it, control it, put it to its best use. To me that doesn't mean one has to be the master of everything a camera is capable of, rather it means that the photographer should be thoroughly knowledgeable as to the features he or she routinely needs to use. I suppose that even means that if you have a $5000.00 camera and only shoot in "auto," then you ought to be completely familiar with how that works and how to use that one feature. And finally, no camera, no matter how capable it is, will take good photos if the photographer doesn't have an eye for a photo. Photography is part knowledge and part art. I, for one, am not content with just knowing how to push the shutter button or how to change shutter speed and aperture. I am one who likes to know not only what, but why and how. Guess that comes from being a pilot for so many years. And about that "art" part--well that's something that is both learned and gifted. My grandson has that gift. He can see a picture. I, on the other hand, have to study it a lot, then hope it comes out as I envision it. All of which has little to do with camera brand or style.

So, I want to learn, and whatever camera I get will be the one that speaks the loudest to me, from several different angles. Right now, it's the D7200. Yes, I know the virtues of FF, but that isn't what I'm after. So I choose to stay within my self-set parameters and vet out what lies within those parameters. I greatly appreciate all the information being proffered here, too. Lots of good stuff. Oh, and it seems that Fuji is nipping at the heels of Sony in the mirrorless venue, with its X-T1.

The D7200 has better overall image quality than the A77II. That includes better high ISO performance and slightly better dynamic range.

But the Autofocus on the A77II is phenomenal... I mean REALLY REALLY good. And of course, the A77II will fire off 12 frames per second with full autofocus control.

The A77II also has 79 AF points across the field of view compared to 51 for the D7200 and 65 for the 7DII.

The AF system of the A77II is faster than both of the others, and there are multiple adjustments and selections, from the full 79 all the way down to just 15.

Additionally, the A77II has much better video capability than both of the other cameras and it is much much MUCH cheaper.

The Nikon and Sony both have much better image quality than the Canon. The Sony is the fastest and has the most flexible AF system. Additionally, it also has the fastest frame rate.

I have handled both the A77II and the 7DII, but not the D7200. The A77II is a much better camera overall than the 7DII, which is EXTREMELY overpriced for what you actually get.

Welcome to the age of political correctness. I'm the first one to say I HATE political correctness, because 95% of the time, there is absolutely no intention of ill will on the part of the person who is being politically incorrect. But at the same time:

The Platinum Rule is a good guide for life: "Do unto others as THEY WANT TO BE DONE UNTO..." In most urban areas, in fact most places in the USA and the Western World, most females over 14 do not want to be referred to as a "girl". "Lady," or "young lady," Miss, Ms, Mrs, or similar terms work well.

It may seem to be a compliment, but "girl" can have many kinds of degrading and insulting connotations. If you're not aware of them, just ask a few women to explain it to you. You'll have your ears burning in no time.

Women might refer to *themselves* as "girls", when they're engaged in "girl talk", but that doesn't mean you can use that term if you're not part of their group! It's the same as African Americans using the 'N' word to refer to their black friends. With them, it's a term of endearment, or brotherhood, or even respect (!). Coming from someone who isn't black, it's the worst kind of insult there is.

I know it's confusing, but you just have to accept it and move on.