I'm building a new MegaTree this year, using 2801 pixels from Ray, I have 50 strands of 50 Pixels that can be used for the tree. I'm looking for ideas on the best length for the strings. I was thiking about making them 42 long. On the controllers, last year I buit a e680 and it did not seem to work to well for me. I'm sure it is something I did not the design. I have been thinking about using the ECG-P12 or E681's to control the tree. Looking for pro's and con of each arrangement and how many controllers I would need.