I'm not trying be argumentative, as this is road can be as dangerous as "what truck," "what bow" and "what caliber".. : )
Below is just my opinion and why I have that opinion.
I think that breeding is far more important that we realize. I am no expert, but the book I link below helped me recognize the importance. My interactions with other breeds & dogs through my participation in NAVHDA events (
NAVHDA - Working to Foster, Promote, and Improve the Versatile Hunting Dog Breeds in North America) further reinforces this belief. Some dogs just have it, and IMHO selective careful breeding enforces that. Most of our modern sporting dogs started as a cross of something way back when, so I am not saying crosses won't work, just that the process should be carefully thought through....
I am a novice dog trainer, but its amazing to see my dog's natural ability take over! I am a big believer in buying the best bred dog you can afford, tailored to what you want to do. For me it was a versatile dog, and after much searching and a few years of research it was a Pudelpointer. Some guys get lucky, but I'm not that guy, so I take every advantage I can to maximize success.
This book by Bob Farris is very informative. Even if you are a die hard fan of your specific breed, his expertise on specific breeding standards and applications is a time worthy read, and applicable to any breed...
Breeding & Training Versatile Hunting Dogs: Bob Farris: 9781985413382: Amazon.com: Books
Unless you are just a die hard single focus upland or waterfowl hunter, I'd like suggest you take a look at Versatile Hunting Dog.
The Case for a Versatile Hunting Dog | Remote Pursuits
Just my opinion and worth exactly what you paid for it... : )