I had a softy tank with 8x65watt PC lighting and got pretty good growth out of my 120. Then I found a tank for $400 on Ebay in kentucky and drove down to get it. It was a 120 drilled (the other one was not) with a custom canopy, 2x250 MH w/ reflectors, bulbs, and ballasts, 2x110 actinic VHO w/ ballasts, 40 gallon sump, Little Giant 1800 gph pump, and a closed loop driven by a Quiet One pump. I couldn't pass up that deal, switched systems, sold the old one for $300 with the lights and everything and never looked back. Tearing down a tank with 250 lbs of live rock and setting it back up was a pain, but I can't tell you how well worth it, it really was. When I upgrade for the last time, I'm going to do everything that I want or wish I would have now; because it's just so much better to plan everything out the way you want it, take your time, and do it right the first time. My advice is the same that everyone else is recommending, go T5 or MH and you won't be sorry a year or 6 months from now when you start thinking about SPS. I thought I'd be ok with softies....but I wasn't at all....and I doubt you will be either in the long run.