Ratings wise, Goku is by far the most popular character.
goku
Vegeta!!!
Depend on which version of Goku you're speaking of: Goku SSJ1 vs Majin Vegeta: Majin Vegeta Goku SSJ2 vs Majin Vegeta: Equal Goku SSJ3 vs Majin Vegeta: Goku Goku SSJ4 vs Majin Vegeta: Goku
Yes; Goku and Vegeta end up in a (loosely speaking) friendship. This is apparent in the Buu/Majin Saga. Most refer to Goku and Vegeta as best friends.
no gogeta is he is goku fusioned with vegeta if not him then omega sheron
Goku & Vegeta
When goku and vegeta first fought goku had to use kaioken x3 to keep up with vegeta but on N amek goku had reached truly great strength most sayians cannot reach and also goku became asuper sayian first and when goku fought majin buu vegeta admits that goku is the best actually he only used it to win not to keep up he wanted to use it to surpass vegeta they were tied in power at first well almost tied
vegeta
Vegeta
Goku
No, Goku cannot easily defeat Vegeta. Goku and Vegeta have about the same strength and power, but Goku is slightly stronger and learned SSJ3 near the end of the manga. Therefore, Goku can defeat Vegeta but cannot do so easily.
Right. It's because Vegeta visted Goku and Vegeta forgot that he had ammnesia and later Goku said he was a good guy.