Would there be any advantage to use this circuit below using ULN2803's ? Would only need 2 x 2803's vs 15x1360's (3 per RGB for 5 RGB fixture) is that correct? My concerns are is performance change w\ multiplexing...etc. You can reach 300ma with 3v on the 2803's if you look at the spec sheet.
http://www.doyoung.net/video/DATASHEET/PDF/ULN2803.pdf
I did order a few 10w RGB, once I get the 3wRGB driver figured out I'l just change to accommodate the 10w... I'm new into this but tech enough and detailed so that it's pretty fun doing so....