Yeah, I ditched the DIY MH after I found out what a pain it was going to be to get a ballast. I also felt more comfortable going with a pre-made unit so I bought a lightly used 96W T5HO after checking out Nano-reef's thread on T5s... the colour combinations seem exciting.

Incidently I have a couple of MH bulbs sitting around if you want to buy some :D

I really love the MH-T5HO combo that I made up for my tank. I think the only thing I would do differently would be to DIY the T5 part rather than utilizing a fixture inside my Canopy. Then I would have used 4 18" T5HO bulbs rather than just 2.