Jerseys are consistently the second best marbling beef after Wagyu.... and look at how long they take to get to that "primo" marbling state. Which, by the way, I think is WAY TOO MUCH MARBLING.... for my tastes.
I have eaten mostly all jersey and jersey cross beef for over 40 years. It marbles nice, yet they don't carry the fat under the hide like the beef breeds. It does have a little bit "sweeter" taste in my opinion.... but ANY GOOD HOME RAISED BEEF is better than most all you get out in the public. And a good jersey x angus will finish pretty fast. I have a jersey steer that will be going to butcher in late winter or so.... he will be pushing the 30 month rule but I want the backbones so will fudge it if I have to. He's almost 24 months (July 20th I think) Would get him done faster but don't have a kill date. Never thought that it was going to be a problem until this stupid hysteria hit.... Planned to get him done around Nov or Dec.....
Guess that is why I mostly eat seafood out.... because I don't grow it. I do envy all those of you who have access to fresh seafood. I am not the best seafood cook, but I sure do love it when someone cooks it right.