If I want big chunks of money, I go for Stocks. Although it requires a great deal of patience. I buy stocks, wait for them to go up to say, 50 NP per share, and then sell them. If you wanted assurance in the long run, theoretically, you should have stocks for every company there is, to be assured of a daily profit so my tip would be to acquire as many companies as possible, buying their stocks when they are priced at 15NP per share.
I once was able to sell 1000 shares of a 300+ NP per share ticker before. That's 300k in one day without even doing anything at all. It was only at 15NP per share when I bought it a few months ago, so basically I have earned a 285K+ NP for profit. I still plan to buy all of the different kinds of shares, hoping that one day, I would always be able to sell stocks everyday since I have every kind of stock there is.
If I wanted quick money though, for say, quests or training, I go for scoresending. I use the greasemonkey version since I'm more comfortable with it and It's much safer.
And when I'm off to work/parties, I leave my pc on, with the habitarium bot running.
Never used AB yet. Planning to do soon, just dont have the time anymore to study it.