Labradoodles (or any other doodle) aren't a breed, so you won't really have a very good idea of what you are getting with one and some shed, some don't and you won't know which you have got, well, until it's starts sheeding...
I do not believe that there are 'good' breeder of labradoodles, or any other doodle. Of course, some are better than others, they health test, they put a bit of thought into what they are breeding, but that still begs the question as to why they are breeding and it's certainly not to better the breed, as Labradoodles aren't a breed and it's certainly not to produce another puppy to keep and show, (in order to eventually hopefully better the breed) because they aren't KC recognised so can't be shown. Most breeders of doodles breed to produce puppies to sell. There is no 'breed standard' and breeders do not appear to be breeding for any particular type or traits.
If you want a puppy then it's a good idea to think about what you want from a dog, how many walks etc you can provide each day, for how long, if you want a dog that will be able to go off lead with some training, something that needsa lot of training and time or something more laid back and easy to train, then have a look at different breeds and see what fits your criteria. Speak to lots of different breeders (find good ones through your local breed club for the breeds you are interested in, not local papers, pet shop ads or even the kennel club website) and they will be happy to speak to you and probably even be happy fro you to visit and meet their dogs.