i agree that there are more than 2 ways to lay them out and diamonds or squares should be considered. how light are the lights? how dark are the darks? think of all the log cabin designs. you can get all those effects with triangles, after all. if you are only deciding among those two options i vote for #1. i think that's sharper looking. my 5 cents.
stop confusing me! you changed pics when i wasn't looking. with the new pics i like the diamonds better.
now it's #2.