I like the neon (yes, neon) lights and the L.E.D.'s in small sockets (for the red look as mentioned). They're pricey, but easy to tuck up and out of the way and use less energy if you're using them for utility lights with the engine off.
But it's hard to beat the utility/flood lamps for price and reliability. They're typically fully sealed, even without the rubber cushion/protective housing around them. And at the price (especially the WalMart price), it's not so traumatic when you waste one on a rock.
Most of them run about 35watts each, put out a nice broad pattern, and are pretty easy to mount. The ones mxpaz has look particularly easy to mount in a nice protected area. Nice going on that one. Do they put out as much light as you would like?
Paul