My problem with the "correct LEDs" is not only that they cost mnore but they run extremely hot. The ones that we could get with the resistors built in for our tail lights even say, not recomended for tail lights / runing lights due to the heat of the built in resistor, so then you have to add a secondary resistor, which also gets extremely hot. Not only that but you are waisting battery power on heating up that resistor. SO essentially, you negate one of the main purposes of going with an LED which is less pull on the electrical system as you are using electricity, to heat a resistor and the circuit is bypassed and useless for those particular lights anyway....

For the blinkers, yes, you still need the ones with resistors in them, but the others, you would not.

But thats just my opinion on the matter, great thing about life, everyone has one and usually options to how you handle that opinion exist so I simply submit this as one of those options.