I also just installed LED (on Shadow) and it is awesome. The colors are bright and vibrant. Much better to me than the LCD.
I have the color LCD on STTNG with dotsXL, and it is a major improvement over monochrome, but the colors are washed out. And the lack of brightness makes it inferior.
I also have LCD on Met with the upscale cartoon mode, which looks good on that game, but I still think the brighter colors you get with the LED are more impressive.
If you like the traditional dots, LED is definitely the way to go.