evergrow LED

[e46er]

I have a 4x2x2 tank and currently running 2 250 MH.
my house has central cooling and tank is on the ground floor so heat isnt really a problem but the fans are starting to get loud the bulb changes are expensive and its 700 watts running all day. Ive been comtemplating the LED route and as many good things I read about radions i just cant justify 2grand for lights.
the evergrow seem to be a good unit for the price and people are happy.
which model would you guys reccomend? I have a mixed reef.

the 48" version IT2012 Controllable Full Spectrum LED (48" Light) $590
or 2 of the IT2060 Controllable Full Spectrum LED (24" Light) $725 total
it seems most people run multiple smaller units whats the benefit? apart from upsizing or downsizing a tank?

my tank has a center brace if that matters.
Im not dead set on going for LEDs wither its just something Im thinking about. insight or experience anyone? cheers