Whatever direction you go, try to find something modular that you can build off of instead of replacing (and wasting) money if and when you upgrade or make changes. Something like the Kessil A160WE or AI Prime are smaller, less expensive, form factors that can work really well. You can start with a couple and integrate more as you go without the need to purchase a completely new fixture. You could also go with the Kessil A360WE, Radion XR15, or AI Hydra 26 if you were willing to increase the budget (and a better choice if you think a larger tank is in your near future). The various black boxes are a good alternative if the others are out of your price range but aesthetically, they look like cheap lights if you don't have a canopy (I had SBReef Basic Boxes and their fixture leaves a lot to be desired in the looks department but you get a decent light for the money).
Alternatively, the T5s are just workhorses and it looks like the bulbs are lasting a lot longer than most of us believed was true. BRS recently did a video that demonstrated they provide adequate intensity and spectrum beyond 12 months (simulated eight hour photo-periods) and are continuing to run them to see just how long they will last (two years doesnt look to be out of question).
