Having a handful of EMs out on route, I will always put LEDs in those to keep the heat down. The general public (non-collectors) seem to like the look of LEDs and it brightens up the games nicely to draw them in, so I'm good with it! I usually just use 2SMD frosted bulbs to keep things simple. Like others have said - easy to just put 44's back in if you don't like the way they look.