Post #559493 by Hakalugi on Tue, Oct 12, 2010 11:52 PM

12v MR16 LEDs. The colors are extremely vivid, they don't fade, they're efficient, and they last a very long time.

Superbrightleds.com sells a bunch. The best ones are the 1 and 3 watt Luxeons. They sell T5 wedge base LEDs as well.

Not all outdoor low voltage fixtures have enough clearance for these LEDs so buy a few samples before splurging or maybe buy new fixtures.