Goliath the LTA here has been in a similar sized tank with 2 T5's (10K and an actinic), and A Fluval 3.0 (bought last year to supplement) for over 2 years. And it keeps growing. Softie tank most part. I won't say this is the norm but, seems to work just fine for me....
On a tank like that my choice would be 2 x Kessile 360X or start out with a couple of Reef Brite XHO's (1 x 50/50 and 1 x actinic) but youll likely need at least 1 more if not 2-3 more later if you move into SPS corals. The regular non-XHO strip lights are about as cheap as you can get watt for the dollar and PAR. The XHO's are a little more and use 5 watt LEDs (instead of 3 if I remember correctly) and have a nice reflector that will spread the light around the tank for less shadowing. The non -XHO's (not Lumilite series) use about 20% less power and produce about 15-20% more PAR than a equal length T5HO which has been kind of the gold standard that many use to judge a lights performance against for quiet a while. I would use the XHO if you intend to do SPS and the regular non-XHO's if your just gonna do Softies and LPS. The Kessils will give you the shimmer like Halides produce that many love, the Reef Brite will be more like T5HO's and give you a nice muted flood light type look to the tank. The Reef Brite actinics will give your corals color pop like no other in my opinion. Now the Kessils are adjustable with an optional controller or the adapter for use with the Apex Controller. The only control you have with reef brites is the 18 dollar 5 position switch that controls intensity only!
