it is your tank do what you want, but here is my opinion, nems will grow under both ( i ran a 4 bulb T5HO) on a 4 foot 110 gallon tanks and had no problems getting nems to grow and thrive. with that said , keep in mind you SHOULD replace T5HO bulb every 12 to 18 months, leds on the other hand are good unless they physically burn out so initial cost up front savings in long run for LED. now with that said ( people will disagree) BUT. there is NO reason to pay big bucks for LED lighting my stance on this is that teh leds used in all the fixtures are manufactures in asia as are the capacitors and resistors. the only real difference between led is color leds used which if you are handy with a soldering iron and sourcing the leds you can change any fixture for the visual you want but i will say that when it comes to led swaps the asian fixtures are easier to do and in the end will provide a far better look than say an $500 + fixture. i know popbloom/dsuny has a 3 fixture 48 to 60 inch setup that sells on fleabay for $340 to $400 and another version for tanks up to 48" which is only 2x led panels for less money.