In my opinion either will do if it's only gonna be and stay fish only.
It also depends on the difference in price. But keep in mind you'll have to replace an extra bulb each time you change them so the overall cost will be higher as well.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.