All tanks and hoods have to comply with regulations so they are all pretty much identical. Make sure that you get the biggest tank that your budget will afford, as this hobby is likely to have you hooked in a short time, and you will want to add more fish and plants all the time
In my opinion hoods with room for two light bulbs are better, as you can use two lower wattage bulbs, something I find helps with algae control, but it's up to you