We have a few holsteins and cross them to beef breeds. For the last 4 years we've been keeping the heifers out of them and cross them again to a beef breed.
1/4 holstein, 1/4 angus and 1/2 another english breed makes a good momma cow. The hubby always bred the holsteins to angus before we married. There isn't a hit on them at the salebarn like some think there is. Sure, those gals are going to put legs on a calf but I am not interested in lowlines so it doesn't bother me.
The 1/2 holstein, 1/2 angus cows are 1400 to 1525 pounds (majority of them), but then again, that doesn't bother me. Cross them to another english breed and you'll shave off another 100 lbs in their weight.
Most of the time you will get a solid black calf. I have never researched it, but in my opinion only, the holstein brings consistency and growth to the table. Our calves are consistent in size and growth, so it makes for a more uniform group when selling.
The hubby likes holsteins so I've learned to work with them or should I say incorporate them into the herd. Do a google search and you'll find holsteins consistently grade choice so I'm hopeful that by my choice of english breeds we are adding tenderness and marbling. To me, its important to be raising beef that will taste good to the consumer. That should be our goal.
As for the "funnel butts" (this board is famous for), I got over that too. Besides, there's only one left side and one right side rump and when we butcher one, we have it ground up with the hamburger (I get my roasts off the front end). The size of the rump doesn't make it grade higher, doesn't mean it has more marbling and doesn't mean it is more tender. Would it be nice if they had a limo or charolais butt, yes, but after a while you learn to not sweat the small stuff.
For those that mentioned jerseys, you can do a google search on "jersey marbling" and you'll find numerous studies on it. They marble behind wagu but their growth is a deterrent (much like wagu or is it spelled waygu) however, for those who sell direct to the consumer probably if you got your calf down to 1/4 jersey and 3/4 good beef stock you'd have well marbled meat.
You have to raise what is best for you that you enjoy looking at, feeding and taking care of. You can get 100 different responses telling you a 100 different breeds but first figure out what you're going to do with the calves (sell at weaning, fatten and butcher, etc......) then get what fits in your environment and your management.