Well I am definitely gonna try CFLs
I picked up a 8 - pack of 100 watt (equivalent or replacement value) CFLs today for 17 $. A real bargain. I am gonna make my own fixture and will have 800 watts equiv. Used in conjunction with reflective film, should do a great job. I shall see.
Was looking locally at 350 Watt (equiv or WE) bulbs yesterday for 19 $ each. That is the largest I could find locally. 700 WE would have cost me $ 38, so $17 for 800 WE looks appealing.
I have also looked at LED. My conclusion is they are useless unless one wants to spend a ton of money.