If you are talking about the GAR bulls, I have used them both some.
The oldest cattle I have out of them are two bred heifers out of RP. One of them out of a GAR EXT cow is to date the best female I have had. The other one is out of a 1407 cow and is almost as good, but she is a little excitable when worked. At this point it looks like they will be moderate framed, heavy muscled ( the best one weighed 944 lbs at 365 days with no creep) and excellent phenotype. They both settled on the first insemination. I have a few more Predestines. Most of them are bull calves still on the cow. They look good at this point, good muscle straight and correct and good growth. I weighed and vaccinated the January calves yesterday and the Predestined bull calves averaged 570 lbs with no creep. I'm pretty pleased with that for 5 month old calves.