I use custom LED pucks for the globes in my set-up (since I want a high-powered LED for these props).
These pucks are RGBWA (amber). Power-wise (and managing the heat), I found it better to power a single white LED, than powering each RGB (just to get white).
But for regular...
I've never been too happy with the COB varieties (10W, 20W, 30W+ version):
The 10W isn't sufficient for a house-flood.
The 20W/30W are okay, but require 27V+, but I don't want a separate PSU in my show.
50W/100+ require an active heat-sink (as well as even higher voltages)
The light-spread for...