Quoted from Pdxmonkey:Pinballbulbs kits are cool cause they have spotlights and light strips included in the kits.
Non ghosting bulbs are 'usually' required for Stern Sega and DE.
I just buy the 100 bulbs for $65 deal on eBay, make my own kits out of single-led bulb colors of 47's & 555's. I have them in both a Laser War and a Jurassic Park, no ghosting issues at all. I guess that ghosting can come from non-fully rectified bulbs. 100 was enough to do the entire playfield GI and underside (places you don't want to have to dismantle to replace bulbs). Backbox is lit with standard bulbs that were pulled from the machine. It is easy enough to just swap an old bulb with another old bulb there, and I have probably about 300+ of them at this point.
I use regular flasher bulbs, I can't justify spending $5 per bulb for something that almost never needs to be replaced. Flashers are almost never turned on, so the lifespan is significantly greater than a standard GI playfield bulb.
ebay.com link: FROSTED PINBAL LED BULBS 44 47 555 styles QTY 100