I have a couple of EcoTech Marine Radion Pros and absolutely LOVE them. The intense output, coloration, controllability, and coral response are are all reasons why I like them so much.
Aqua Illumination (AI), Maxspect, and Kessil all offer great lights as well, any of which I would be delighted to have over my aquariums (and have at various times).
However, when shopping for an affordable LED strip light for my 22 gallon tank, pickings were slim. I ran into two main issues. First, most of the strip lights I looked at were low-powered and not sufficient enough to sustain the types of corals I wanted to keep. Conversely, the higher-output strips were much more pricey but lacked any real controllability.