Buddy Press vs plugins "Friends", "Chat", "Communities"


I was wondering... would it be better to use BuddyPress or to use the combo of "Friends", "Chat", and "Communities" plugins? Is there an advantage to going one way or the other. I've already loaded BuddyPress, but I'm willing to turn it off if the plugins is a better route. Does it matter either way? Performance wise, functionality, looks, etc.?