thats why my man
your best bet is to get a metal halide around 250 w or more for veg then switch to high pressure sodium lights for flowering.
but if you dont have the extra cash then cfls are fine just get like double or triple what you have now.
i've never had one burn out,, but i replace the bulb every year so they give off the correct spectrum,, they will last longer,, but your plants start to slow down alot! i've gone over the year many times,,