Moppy, I run both led on the main tank and T5 on the frag tank. I agree that T5 lighting display a much vibrant color. I recently moved a few pieces from the maintank to the frag tank and vise versa, the color difference was astonishing. Some of the pink birdsnest and red spatulata that looked intense in the frag tank looks really washed out in the maintank and others more so of the blue color spectrum looks awsome in the maintank but just so so in the T5 tank. I think it all depends on what you are looking for in your fixture whether you want to get the best color out of your corals or scarfice a bit of the color for low maintenance, controllable lights. One thing I don't like about T5 is the life span of the bulbs, I have found once the spectrum shifts you better be ready to change you bulbs or get ready for some major algae out break. I have never had any issues with my AI sol. 9 month for replacement on 6-10 bulbs can be costly.
Here is the maintank
Frag tank with t5
