Wow, there's a lot to know and learn about Koms. They are a great, but demanding, breed. In addition to this forum, you might want to join the Komondor list out of Yahoo Groups. There are a lot of good Kom breeders and owners on that list, and you can get a lot of good info there. Also, the Corded Dogs Grooming list, also on Yahoo Groups, has Kom owners on it as well -- that list is focused on, obviously, grooming a corded dog.
Koms will demand that you be the alpha dog -- if you're not, then they WILL be. They are great guarders and companions, as well as many that are great show dogs. Each one has their own personality, within the standard Kom traits. A good breeder can help you determine what you're looking for and which Kom pup is right for you.
I wouldn't necessarily recommend a rescued Kom for your first Komondor, BUT you never know -- the perfect Kom for you could be from rescue.
Our Kom (Goulash) is a pet/guardian/companion. We've had him since he was 2 months old -- he'll be 8 years in July. He's a handful, but we wouldn't trade him! In addition to Goulash, we have a Greyhound (Hermes), 2 cats, and a teenaged daughter. Goulash is great with all of them, but that's because we made sure that he knew my husband and I were the alpha dogs. Can't stress the need to train and work with training this breed enough. If you leave your Kom to its own devices, it will run the household -- but that's not necessarily what you want!
In addition to determining if you're right for a Kom and vice versa, you will want to be really clear on what you expect the dog to do. Again, a good breeder will help you with this -- if you want a livestock guardian, for example, you might be looking at a different breeding pair (or breeder) than if you just want a companion dog than if you want a show dog.
You're doing the best thing in starting your research early. Again, the Komondor list has lots of good breeders on it, and everyone there and here will be happy to help you!