OH gawd, I've heard this debate for 40 years now. Use what you like.
One of my friends made many 100K$ on an import vise on a inexpensive Taiwanese BP clone. It did not have the swivel base. And to Tom Lipton's dismay (if he ever heard of it), he has precise fitting alignment tabs affixed to the bottom.
Another has a 10X54 BP clone, with a very high tilt/swivel base. He earns several 10K$ per year on that setup. (he has no riser, which limits his vertical space).
My setup for more than 20 years has been a Kurt clone on a swivel base.
My point is that whatever you use, learn to use it well. My advise for a starter, is to get the most rigid setup you can afford. Thus for a beginner, leave the swivel base on the shelf for a while. After you gain significant experience, a swivel base can be effective in some situations and can save considerable time. I leave mine on the mill because I'm lazy and I don't want to lose the base (!!).