I have the 4" toolmakers vise from Shars on my Taig. To me it looks to be very high quality. Moving the nut and screw from one notch to another is sometimes a PITA though.
It's hard to tell from the picture, but that swivel base vise looks too big.
Some stuff to consider before buying a vise...
If the 3D model of the Taig on CarterTools.com is accurate (I think it's pretty close) there is only 4.33" from the center of the spindle to the Z ways. So anything tall enough to hit the Z ways (~1.5" or more) will only have ~4.33" of Y travel. Anything tall enough to hit the Z screw (~3" on my machine) will only have ~3.66" of Y travel.
The fixed jaw on my vise is 2.75" tall. This means the fixed jaw will hit the Z ways. The fixed jaw is also 1.25" thick. This means I lose that from my Y axis travel if it is mounted perpendicular to the table. So, with the vise mounted perpendicular to the table I am left with a maximum of ~3.08" of Y travel.
If you buy the Taig spindle spacer...
part number 1251 from Cartertools you can get an additional 1" of Y travel.
If you believe the dimensions on the Shars website the 5" toolmakers vise is actually shorter than the 4" vise. If I were buying a vise today I would probable get that one even though it's $13 more.