>>9861292>Black Series ESB VaderPictured
Considered best bang for your buck.Great Figure, but lacks hands and has average articulation.
>Figuarts RotJ Darth Vader (2019)https://myfigurecollection.net/item/844991Very good looking Vader. Has a lot of display options, a decent cape, and good articulation. Plastic bottom part of the robe considered a downside.
>Mafex Rogue One Darth Vaderhttps://myfigurecollection.net/item/519520A bit chunkier than the figuarts but has all the same benefits and downsides. Nice cherry lenses. Comes down to personal preference.
Those are considered the top 3 usually. Plastic model is also a option but would take a lot of work and a new cape to look good. Figuarts ANH Vader is decent as well. Most of the earlier Japanese releases are inferior to the latest ones usually. Japanese figures are also aftermarket by now so their prices will definitely be higher.