The coolest RGB post I've seen!
Thanks - mine is the 112 RGB Table .. using TLCs. He did it without the easy LEDs - pretty amazing accomplishment. I did similar with only 44 LEDs and 595s and it was a bear to say the least.
I have a bunch of the 12v flexible strips ones (4 wire with 6803 chip) and they are quite bright and they don't have as much voltage drop as the 5v ones but you also have a few trade offs as the leds are in groups of 3 instead of each one by it's self but if you are more then a few feet away you can't tell the difference anyway
The strips and the pixels with three LEDS (both the same basic setup with a different layout) both take the 5050 RGB SMD. So three SMD LEDs per chip will produce the same brightness level .. just distributed differently.
I am curious if you like how the strip you are using look / work. I get a weird looking flicker when I use the strip that I don't get with the same app running against the pixel versions.