If you look at the Stefan videos, he did a lot of work on this style of import 'grinding' vise. They are quite low profile, generally very accurate & reasonably priced. These are also good to have around anyways to clamp a vise within a vise for compound angles as you expand your tooling arsenal over time.
https://www.accusizetools.com/search-results-page?q=vise
Then the next step up is low profile 'mill' vise. I've seen them in 4,5,6" jaw increments. btw - 'm not advocating Accusize (Chinese) just showing pictures
https://www.accusizetools.com/1202-1025-6-x-8-cnc-machine-vise-system-matched-vise-bases-0-0004/
The Kurt style has more mass & rigidity. Better selection of replaceable jaws. But the tradeoff is they are elevated as much as 2" above the low profile style.
https://www.accusizetools.com/6-super-lock-precision-c-n-c-machine-vise-fa23-5206/
The caveat to all import vises is its a crap shoot. I wouldn't blink an eye on most anything from Taiwan, Vertex etc. Its usually great stuff for hobbyist precision. But they can cost nearly the same as a USA Kurt depending on the model. A less expensive Chinese vise can range from this quality level to basically a useless boat anchor, even if you buy the same brand someone a week ago was perfectly happy with.
If money is available & mill headroom sufficient & mid/upper power range then a Kurt/quality clone is probably the way to go.
If mill power, headroom & table size is more limited consider some of the other options. It really depends on the work you anticipate doing, but just be aware that tooling gobbles up the attic space under the quill very rapidly. Just mock it up with a cardboard cutout vise from catalog dimensions to get a feel.