[fastpat]

I have four of the the copper finished ones that I bought at Lowe's. They're in full sun and run off two AA 900milliamp nicads at night. During the shortest days they ran out of juice at around 1AM, now they're on longer and will probably last all night in about another month. They put out a very white light with the LED they came with, and since there's no street lights out here, they light up the area as intended.

I have another type that are intended to be mounted on a wall or vertical surface. I'm using those to illuminate a stairway to my deck, one per step. They work pretty well too, but I'm not crazy about the orangish color of the light they put out so I may change the LED they came with to one that's closer to white.

These are not as good as the low voltage lights others have mentioned, so if you want a lot of walkway illumination they won't do that. I like the freedom they give you to locate light anyplace that has direct sunlight without the digging and running of wires and/or conduit.