Yes, the CREE blub does look good. I have the very same light housing too. although I am running it at 14.4 v with a mr16 20w (overvoltaged). Do you know of any LED bulb (or a set of them) that can give off about 600 lumens? (I am guessing I could run two of those LED bulbs... but then the cost of the bulb would be almost equal to that of an HID)....

edit: SharpT... you might want to consider overvoltaging the halogen bulb (but it still wont get you the amount of run time you get with the LED)... but the light will be whiter, and bright by a certain percentage...