Quoted from Dewey68:
I go for the 25K and pickup passenger on the spinout until I get up to 3 + balls, then I go for 100K, 500K per spinout makes it worth it.
This. 100,000 is a lot of points in Taxi, especially with the multiplier. Passenger pick up is great, but not so difficult that you want to waste points for it. Weigh it: 25K + pick up passenger pick up bonus, or 100,000 x 3+) Supposedly, the pick-up automatically selects the "hardest passenger to pick up" before you score the first jackpot (after that, pick-ups are singles). If Pin-bot is lit, I try to pick him up through the spinout if it's an early ball, since he is the most difficult to get. I've never had much of a problem with Marylin/Lola drains and typically backhand all of those around the edges of the targets.
My strategy is to always lock a ball when it is lit, lights after every pick-up, and then start multi-ball. You can't discount the amount of points that starting the Express Lane multi-ball shells out (300,000 + nice ramp bonuses). Plus, two balls flying/flailing around can really help in collecting those drops. Jackpots are nice, but not a reliable means of scoring for every ball, since the amount depends on a raised jackpot that resets after collected, and it is difficult to pick up all passengers every ball. I believe that the better way to score is to start Express Lane anytime you can, if you get a jackpot on that turn great, if not, a few Express Lanes more than make up for it in scoring.
"Carry Passengers"....I don't really go for it, but it is nice to collect it with your last ball, since it doubles your pick-up bonus. It's also good to keep some action in the pop bumpers early and try to complete the rollovers up to 4X to light the extra ball; you may also Carry Passengers accidentally, which doesn't hurt.