We have had a Doberman, and he was a beautiful, sweet boy. My Dfil had one for a long time, too, plus we rescued a couple, and placed them...one with my Dfil, because he had loved his first one so much.
The pluses are that I like their personalities, and they are easier to groom, with their short fur. They do need fairly regular bathing, but that's easier to deal with if they get used to being bathed early on.
The minuses are that they tend to have health problems these days that keep them from always living a long life. That makes me shy of rescuing one, which I would want to do. Even with a breeder with a good reputation for healthy, long-lived dogs, you never know. Our Thunder, who we rescued, passed away too soon.
Then there are GSD's. #1 plus: I've always wanted one. I have spent countless hours with other people's, and tried to talk my parents into a puppy once, but no go. In fact, that's the breed of dog that my Dfil had, which lived with his original Doberman, when I was 13.
Other pluses are that, like Dobermans, their personalities suit me, in general, and, like Dobies, they are well suited to being a SD.
The minuses are that: They need more grooming than people think. If you don't, they shed quite a bit, and smell like a wet, wool blanket, or worse. So, there's regular grooming.
Also, health-wise, they can have joint problems. Oh, and I like them more of a straight-back, not so much with the extreme lower back end. It's more difficult to find the ones without the low end now, than when I was young.
Which, that plus more modern anxiety issues, make it difficult to rescue, just like dobies. Even from breeders who are careful, you don't know if they will have clear joints with time.
Dobies can washout quite late in their training, due to intolerance in public access work. Though...I no longer live in the city, I go out less these days, and when we do, there's rarely an associated large crowd.
Flip the coin and GSD's can washout due to stress and separation anxiety issues.
Six of one kind, and half a dozen of the other...
Things may not even work out with either, I may end up with a Rhodesian, or some such, but I wanted you to know that I share your feelings for the breed, and have very fond memories of one that used to run away from home to visit.
May a wonderful and beautiful GSD cross your path, at a time when you are ready to integrate him/her into your home!
Love All Life, Thank You For Posting! :)