I went with a 20 Odyssea bow-front cube as it came with 2-36wt 50/50 PC @ $78. I wanted to add my own filteration. I like the canopy as it is a bit more open than all the others I looked at so heat wouldn't be a problem. So far it stays at 78F max. The lights are only 3 inches from the surface, but the filteration I'm using creates very few bubbles so an occational wipe on the tubes and it's good to go.
I was concidering a MH, but I have a 2x36wt retro that I might add instead if it looks life it's needed. So far the few corals I have are doing pretty good with just 72wt.
I went with an Emperor 400 HOB instead of sump and it's big enough to place the UV, heater, HOB Seaclone skimmer in or on to keep the tank unclutered, except for 2 maxi-jets.
Nano's are fun! They take attention and careful planning. I started mine 9-10 weeks ago.