Best bulb for the budget?

Currently I have 3 daylight 6500k CFL bulbs goin for 5 plants, but I wanted to be prepared for what type of light I should get for flowering.

As I understand, it's best to have a light in the red spectrum of light for flowering? Also, i know the HPS lights are generally the best to get, but I'm not sure the amount of money for one of those is worth it (it's not practical) cuz it's just a little closet grow. I am going for fairly large plants for this set up, so I know CFLs are probably impractical there as well. Any advice on what type of light bulb and quantity? I would like to spend less than 15 or 20 bucks per bulb. Thanks!

Here some CFL's for flowering- http://www.growlightsupply.com/watt-cfl-grow-lamp-2700k-p-212.html

For 5 plants you'll need 6 bulbs. It's better to get a 250w HPS for those 5 plants and the electricity used isn't noticably different from the CFL's either. Here's a good 250w- http://www.hidhut.com/catalog/250w-...lb-and-economy-reflector-combo-120-p-412.html

they make a 150 watt and 200 watt cfls, i use them for veg, they are great and , i think i paid 60.00 for the bulb and fixture. walmart has a thin bulb 4 ft t-5s for 20.00 each, they work also. the bulbs are cheap too