After a rather wet December I am very happy to say that my 5v pixels that I got from Ray came through with zero failures. I used 500 of these on a mid sized tree using Ruprects design.
http://www.aliexpress.com/item/50pcs-DC5V-input-WS2811-LED-pixel-light-with-all-BLACK-wire-IP68-rated-epoxy-resin-filled/1821855394.html
Mid year I bought one string for testing which included running them underwater for a few hours and based on this I bought more, and will not hesitate to buy more for 2015.
Jon
http://www.aliexpress.com/item/50pcs-DC5V-input-WS2811-LED-pixel-light-with-all-BLACK-wire-IP68-rated-epoxy-resin-filled/1821855394.html
Mid year I bought one string for testing which included running them underwater for a few hours and based on this I bought more, and will not hesitate to buy more for 2015.
Jon