I had to replace a dog in the last year. Ask around before you pay a kennel big $$ for a trained dog. You'd be surprised how many people have their circumstances change and need to move a well-trained dog in the 1-4 year old age group. When they do, the price is often $1000 or less. Tell your friends, your taxidermist, your vet that you need one, mention whatever breeds you are interested in, and sooner or later you will get a call or two. It only took a few months for me.
I strongly recommend glucosamine chondroitin for your current dog. Don't waste money on the veterinary version; get the Costco 1200/1500 tables for people, cut them in half, and feed one-half in the morning with food. You will see the difference after a few weeks.
Finally, I live in Arizona, so I know the need to have short haired dogs and cover ground. English pointer is the way to go.
Germans look close, but aren't in my experience. But I am prejudiced after 5 generations of English....
