I was in the process of building my megatree and was going to order a ton of LED lights when I first read about the Smart Strings. I am SO happy I didn't place my order earlier. I went to Walmart and got 16 strings of the cheap minis to put on the megatree just so I didn't end up with a lonely metal pole in the yard.
16 strings with 48 nodes each, 16 SSC, one hub, power supply etc looks to be around $700. Which initially looks like a huge number until you take into account that I was looking at almost $200 for each color I wanted on the tree for the LEDs.
Of course my wife won't see it that way.