the megachrome halide lamp is one of the best I have used, the T5's look good too, however from what I have read they are slightly inferior to the ATI or KZ tubes, certainly not enough for me to change them out before they are due to be though.
I did get the option of what bulb and tubes I wanted, I went with the 14500k hqi, 2 x pure actinic and 2 x aquablue +.
What bulbs have you gone with?