I've built a few and worked on more.
As I wander around the net I often come across posts of new builders fretting about their build. What kind of bench, what wood, which vise and where to place 'em, and so on. All understandable but also a waste of time for the new builder. Just build something that is strong, cheap and fast to build, then go to work making things. After working on the bench for awhile things about it will drive you to barking at the moon and then it is time to build another. If you are lucky and pay attention to your needs and not to bench building posts and books, after a couple of cycles you will end up with a bench that works.
The posts from new builders are what they are. The posts that bring out my inter curmudgeon are the ones with photos of the new completed bench that has a different type vise on each corner, is wide as an aircraft carrier, has rows of both round and square dog holes, has a sliding deadman on each side and a bench jack standing by, and is finished so slick you can see your face like in a mirror. And even better only took two or three years to complete. BTW, almost every single "feature" of the bench combined with all the other "features" would have me barking at the moon faster than the first build it "strong, cheap, and fast" bench.
OK rant over, it will soon be time for my afternoon meds.