more lights is good, but i've found that motion of some kind really helps too. i've put one of those little square jobs with the three different light settings (on, blink, and the back and forth thing). my wife have a green one on the front too. in conjunction with her niterider light, she's ok. i've got one of those cateye LED lights, it's great for the price but in no way adds up to her niterider. i want to get a niterider too, but the cash flow isn't flowin fast enough right now.
when it comes to riding, my rule is this: i don't care how much i spend, as long as it helps keep me save. we too ride with the lord, but i'm trying to make his job a little easier.
granted, i live in a small town so the drivers here are much more considerate than in NY. in the end, you've got to do what you've got to do and sometimes that costs money.
E...
ps. don't forget rear view mirrors. that way if they can't see you, you can at least see them.