johnny rocket
the basic answer to your question is yes the hps will outperform the fluorescents. however, your electric costs are greater with hps and the heat is much more intense. i use a 125w fluoro and it works great --from start to finish. where are you growing? in an attic, did you build a growroom? what kind of funds do you have available? who's paying the elctric bill? again, the basic answer is the hps will outperform the fluoros but there are other things to consider.