Demonbuddy for sure.
Immortal injects heavily into the game, it's more of a hack than a bot. THat's why it can for example just leave a game without TPing instantly, stuff like that.
You're trading $$ for security, which in my mind is worth it as I'm just lazy and don't want to farm all day as opposed to selling gold or whatever.
I don't even know if selling gold is worth it anymore with the real auction house coming out.
Gold prices dropping from $10 to $5 in one day and more tomorrow.