Hi all Having finally decided to bite the bullet and get LSP. Now I have to choose controllers. Just chasing some advice before I commit to a pixel controller Question 1: What are the advantages/disadvantages of multicast and unit cast? Question 2: can not find any details on whether the 681 accepts unicast or not, any idea? Question 3: with the different interfaces for configuring the controllers, what is the frequency that we actually need to configure/reconfigure the controllers? Any help would be greatly appreciated Thanks Doug ps this site rocks. It has totally pushed my interest and commitment to christmas lights display. Only wish I had found it before I had committed to my first display.