Lighting: Outer Orbit 150W vs Sunpod 250W

[JDigital]

I am just trying to plan for future lighting on my tank (36" long tank). I am currently running a T5 2x39W fixture, however I don't think that will give me enough freedom for coral additions down the road. I have narrowed my MH choices down to the following:

Outer Orbit 150W 36"
http://oceanaquatics.com/store/produ...50W-HQI-36%22/

Sunpod 250W 30"
http://oceanaquatics.com/store/produ...50W-HQI-30%22/


Now my question is, What would be the better combo?: my T5 fixture and the Sunpod MH (w/ Lunar lights) or get rid of my T5 fixture and just go with the Outer Orbit?