I am certainly no LED expert, but I've been told by a few seperate people that the newer machines are specifially made to have the LEDs in them and will perform better because of that. This is especially true of the machines like WOZ (and STLE?) that have the RGB changing bulbs programmed in. I've got 7 machines at my house and all are different years/manufacturers, and all act differently with LEDs. My NGG doesn't strobe at all with full LEDs, yet my newer LEDed Stern Spiderman does. I can't put LEDs in the post lights on my Jurassic Park because they either constantly strobe or don't work, yet the same bulbs work absolutely great in the inserts. LEDs work great in my older EM Twin Win. On my Frankenstein, it depends on the bulb manufacturer and if it is polarized or not. I think it has less to do with the bulb itself and more to do with the inner guts of the machine.

You should have no problem putting LEDs in Demo Man, using any vendors here to receive good results.
There are bulbs for Ghosting, and bulbs for flickering. There are boards there can be added to smooth out these issues using regular bulbs. There are great ways to increase the brightness, and personalize your game.

Strobing can be game to game sometimes, due to voltage issues through the power supply board, through the wiring, and through and to the socket. It can happen, but you cant tell until you try.

Your own personal eyes and the ambient lighting can affect strobing.

Certainly worth doing, as in many cases with even sensitive eyes, and/or changing a socket, your game will
get a great face lift!

It is kind of the adult version of a Light Bright. Have fun.

The LED OCD board fixes the strobing and allows you to lower the brightness of each insert. Combined with the smooth pulsing effect it gives the LEDs, it makes them look inoffensive and natural:

http://pinside.com/pinball/forum/topic/led-ocd-advanced-lamp-controller-shipping-with-wait-list

You won't be able to use it with newer Stern games that come with their custom LED hardware, but that's only a handful of games at this point.

lmao.

Stern's not doing anything special. Their GI is Cointaker 2-LED bulbs.

Yes cointaker premium 2 non ghosting LEDs are awesome. I have them in my ACDC pro inserts and they are kick ass!

Only for inserts. Don't need them for GI.

GI doesn't ghost like inserts, so you don't need Premium. Stern uses CT 2-LED for GI. I use the same in my other games that I convert to LED.

Sorry, they call them "Double LED"
http://shop.cointaker.com/category.sc;jsessionid=95ECDB95AF250911AC7299D10C3048D8.m1plqscsfapp01?categoryId=136

Anyone making the replacement led boards for new Sterns yet?

I found the Metallica set from pinbits but those colors dont work that well for the villain inserts on xmen.