I was playing with radians at the fish store the other day. I liked how customizable the programing is. Each color is on a different channel. This allows you to only have red, green, blue or yellow lights. You can program them to change every few seconds.
I use Acans and I like them. I have an older model which isn't as customizable as the newer model. I am not sure what the newer model does.
A lot of people like the no name brands from amazon or ebay. I have seen a few tanks with them and they look good. But I can't vouch for their growth rate. The ability to have a programmable light will cost you a lot more money. I also don't think the marine land lights are full spectrum.