"best" is not a simple issue. It is composed of the sum of many different traits. Flavour is important, of course, as colour and size, but In pots (small space implicit) I think that "thornless" is a must have trait.
Lisbon and Fino have many thorns, Verna a few (but longer), Eureka none or just a few (short).
Lisbon is much more vigorous, so more difficult to keep happy in a pot. Eureka the less vigorous of the four.
Limes have thorns, but smaller fruit (Desirable trait if what you want is a bonsai)
Verna has bigger fruits than Fino but there is a lot of overlapping
Another trait is the skin thickness, bigger in Verna than in Eureka or Fino (the name Fino "slim in spanish" is related with its thin skin). A thick skin means a better post-harvest behaviour of the fruit (but less juice)
If you aim mainly for visual impact no lemon variety can beat a citron Citrus medica, that looks exactly like a humongous lemon.