If you can afford it get the finnex. Or even consider the current satellite plus or standard. I currently run the coralife t5no and just replaced bulbs. Almost $40 for two and I had to order them as the no version bulbs are not readily available in my area anymore. I can find the t5ho bulbs but not the no ones. Considering the increased efficiency of the leds and the yearly replacement of the fluorescents and you'll make up the difference in price within a year.
Finnex. I have both fixtures, and I don't think the Coralife would be great on a 29. It seems barely adequate on my 20H, and has already shot a pair of bulbs in about 6 months. Plus, Coralife is the only producer of 30" T5NO bulbs, so you will have no other option for replacements. Meanwhile, plants are going nuts under the Finnex in a 38-gal.