Last year I grew my 6" banana's under a 400watt 10,00k MH bulb with a supplemental 6500k Compact Florescent under a round hood. Like the one pictured above. THis year as the plants are over 8ft I added a 6 bulb t-5 6500k unit that seems to work great with the others. Here is where I got it. It was the best price for a t-5 unit that I have found and people that have come over to look at it have also bought one. I would like to add another at a later date but $$ will tell. So far I have had really good luck with what I have been using. THe old 10,000k MH bulb was from my reef tank and although it is mainly blue it worked great the plants did not end up being long and stringy they went from 6" to over 3ft in a little under 3 months.
Hydrofarm T5 4FT Designer Fluorescent Grow Lights - Plantlighting Hydroponics & Grow Lights