Hey Sandy - I have the DX with 48w. My zoas always seemed to do well with that amount of light, the filtration in it sucks and the water flow is poor. I think nearly any tank that size needs to be 'modded' to get it up to snuff. I ended up putting a little power head in there to increase the flow, but in a tank that size the powerhead looks kinda clunky. They do make a decent skimmer for it now (I have the fission, don't even bother), the new one I think is better.
Other than that, the only complaint I can really think of it it gets hot in the summer. I ended up having to leave the flip lid open in the summer to keep the water from reaching 84+ degrees, and then my sixline jumped out.
They do make chiller mods that go into the hood, have you looked at nanotuners.com?
The jbj isn't a bad little tank, but the extra cost you may put into modding it (adding a skimmer and flow, and chiller for temp problems) may warrent buying a little more expensive one off the bat. This one looks groovy:
http://www.nanotuners.com/product_info.php?cPath=23&products_id=367
Also, at nanotuners you can order the tank with the hood already modded to different specks, so you can get increase light, chiller built into the hood, etc.
Kam
Wowsers, I just saw this. 600+ for a 34g, but dang its got t5s, skiller, stand, power center...
http://www.nanotuners.com/product_info.php?cPath=23&products_id=366
