That's a nice new light, but how much is the output? If the old fluorescent ones were flickering or blowing then they were the wrong type, the ballast was going bad, or they were just too cheap. I've got four of the 8' high-output type. I don't remember the correct term (T12?) but they don't flicker, they come on with a flick of the switch, and I haven't replaced a bulb in years (which is good - each one costs more than a used Chevy.) I turn one on and it lights the entire shop. I turn on all four and the astronauts from the space station call down and complain about the glare coming out my windows. (I might exaggerate just slightly for effect, but they are real good lights.)
Joe