Like I said I have no experience with Orbit LEDs, but I have owned other Orbit products and was not impressed by them.
I hear good things a bout Pacific Sun LEDs.
I have a Vertex Illumina that is a very nice unit, but it did not come with full spectrum lighting. The base unit only has Royal blue, Blue and White to work with. Now I have to dump another $600 (for 3 multi-color modules) on top of the original $2,700 I paid to get full spectrum lighting.
Just make your choice carefully. Do not jump at the first cheap fixture that "says" it will do everything.