QuickSmith Pro is a very nice program, if it works properly, which is, from experience, about a 70-30 split. (With 70% of the time working). The other 30% of the times, it just withdraws the bars and remains there, standing still.
When it does work, it is fairly "humanlike" from what I've seen, and it's relatively fast.
Other than having to baby sit the bot, It's an amazing machine amazing xp/hr ratio when doing Gold bars for that easy profitable 45-99