i have the current dual satelite 2x65W on my 29... it's been ok, i'm keeping mostly mushrooms and a couple acans..
the new current sundial t5 fixture looks pretty awesome, i considered getting one to replace my pc's, but i just got new bulbs instead.
the other fixture i was looking at was the tek t5, but it's 24 inches long, and 12 inches wide, i thought it would look silly over the tank, and it's $$$ too...
good luck!