I don't like RPG; it's.. erm.. kind of Freeroam. Freeroam is nice, but don't try to scramble it with Roleplay.
Roleplay is awesome, it's like you are a new citizen in a city in San Andreas state (Some servers changes it name to "California" as in real life), you have to reach skills in that city, get a job, buy a house, buy some cars, be in a faction, become somebody probably famous by legal terms, or illegal. It's awesome, and it's also better in Multi Theft Auto.
Multi Theft Auto Roleplaying servers are better than in SA:MP, and they are complety different to Garry's Mode Roleplaying servers.
Vote for Roleplay!