I have a Tiger Mt lab. Tiger Mt Kalle turned three on Dec 2. She is a great hunting dog, and a wonderful house dog as well, but...she has bad hips. John Greer offers the best guarantee i have seen, and he does honor it, but I would rather have a healthy dog. I wouldn't mention it except I have also had experence with another of his dogs that has bad hips and elbows.
While I was in So Dak this year I ran into a fellow from Texas that had two of John's dog, and he also complained about health issues. One had an under shot jaw, and I can't remember what he said about the other one. I was dealing with a lost transmitter, and wasn't paying complete attention.
I have got to say that the reason I purchased a Tiger Mt lab was because of all the good reveiws, and I also had a chance to see several of them work, and they are fantastic hunting dogs that do point. I'm not saying you shouldn't get one, just make sure you have it tested before the time limit on the guarantee runs out.