After much research, I found some strobes from ChristmasLightShow.Com. they cost a little more than most, but they are very,good.We had a few good rain storms, and had no failures. I bought mostly xenon strobes , ( there are 2 different speed options for flashing)and a couple of their led strobes. I used the led strobes next to the xenon ones , and you could really could not tell the difference. CLS led strobes are bright!!!! the cool part that I found with the CLS strobes, Is that you can use krylon metal x paint and paint them (3 or 4 light coats ) with no washout.