Your lighting will depend on what you want to keep plant wise. With the plants you mentioned, low to maybe low medium lighting should be fine. A 29g tank requires a 30" (or close to it) fixture.
There are incandescent, fluorescent, and LED
fixtures (there are others as well). And there are high end and cheap models available for each type. Higher cost does not always guarantee a quality product. I am partial to LED
fixtures since they are typically smaller/sleeker, consume less energy, give off little heat and (can) produce decent lighting. You cannot change the bulbs but they have a duration of several (or more) thousands of hours. Finnex and Current brands come to mind.
The expensive fixtures you were looking at produce a great deal of light. So much so that you would have to provide ferts and carbon source to keep the plants healthy and to control algae.
Not a complete answer but hope it helps.
Sent from my iPhone using Aquarium Advice