Welcome! Lots of good info and helpful guys here!
If you go under the search function up top, type in "project wiener" and search the "powwow" forum under "subject only" you'll find a large thread I started about the training and first couple years of tracking with our dog, Oskar. It has quite a bit of input from other folks as well. We've been at it for 7 years with him now, and he just found his 50th deer.
Search "blood tracking dog" and you'll get a bunch of threads with your same question, and pages of answers.
There are lots of breeds out there and each has their advocates. Sorry to say, but there is NO BEST, NO one size fits all, though some breeders will say otherwise. Look through all the threads on the searches and you'll get a bunch of breeds to think about.
R