These are good looking Labs. They are "English" looking but a little on the short side for my taste. They don't look overweight, just thicker all around like most typical show Labs. They are all OFA, Optigen, Cardiac tested...all, except Dock, have really nice looking pedigrees (at least the boys do - I didn't look at all the girls). Some of their boys are Ch themselves. They retrieve and seem to, in pictures, handle the water *with their size* very well.
A friend of mine has a field Lab and a show Lab. They've been bred together and produced wonderful proven field retrievers as well as show prospects. Both have Hall of Famers, Dual Champions, conformation and field/hunters behind them as well as good/excellent & good/normal hips (parents have been tested recently and are both Good) behind them. Their male looks very much like the BlackRock Labs but with slightly longer legs and a slightly thinner tail. Still "otter" just not huge. He's being entered in shows as we speak.
Anyways, their dogs look perfectly fine. All pups sold on limited registration - good. Even though they don't intend for them to be hunted with I imagine most are. Just not shown or bred due to LR. I didn't look at their health guarantee so I can't comment on that.
My Lab friend still has 2 pups from their last litter of 6. One to a hunting home, one to future frisbee/agility home, and two to pet homes. 1 male and 1 female left. Male is quieter, potty trained, very sweet, listens/learns quickly, heels, walks on a leash great, loves water, looks like potential show prospect.
Female is louder, curious, fearless, sweet, listens/learns quickly, walks on a leash, loves retrieving & water, has wonderful traits for field/retrieving.
Anyways....I'd personally like the Black Rock Labs due to the testing that is done, the pedigree & some ch parentage. Also depending on health guarantee.