Bilbo, because he's an OG.
I would be happy to have life like Bilbo.
Frodo is definitely patronized a lot in the film trilogy, but in the books he's sort of arrogant and snappy. Of course, his character has developed by the end, but I still think Bilbo was better as a whole. Also, according to my sources, he was a pureblood Baggins, whereas Frodo was adopted (I'm not being racist, I'm just saying the Sackville-Bagginses can be forgiven for their surprise at the latter's inheritance). However, overall I think Frodo has the better development of the two, so I can always respect those who sat he is better.
In my opinion Bilbo is better.