Consider grabbing some nice LeDs. Incredibly cheaper in the long run (no bulb replacement cost), 10 year life span with only a 30% reduction, allot less expensive on energy consumption, and best of all very little heat escaping into you aquarium water! Look into the the way the light travels as well. LEDs are more linear, the light travels deeper without loosing effectiveness in the depths.
Nothing in this hobby is cheap. You get what you pay for. You want to transition into a reef setup? Your lights will be the bread and butter of your system. Spend 400-500 on good LEDs, have beautiful corals. I have 25 3w LEDs in my nano 28. I grow softies, lps
, you name it. Mr X has some good LED
threads in reef.