High tech uses bright light, lots of ferts, and CO2 to push plant growth to the max. Frankly, perhaps great for plants, but in my opinion, not really fish friendly.
I'm a fishkeeper and certainly believe that living plants create a much more natural looking aquarium, they also aid in water purification by converting nutrients (aka pollution) into plant tissue they we eventually remove in trimmings. This is especially true for fast growing floating plants that use ammonia as their nitrogen source.
So I much prefer low tech with 'normal' light and modest fertilizer.
To the OP, will you be a fishkeeper or an aquatic gardener?
If the former, then low tech is for you. If the latter, you'll need an LED light made for a planted tank, lots of ferts (check out the 'EI' [Estimated Index] method), and a CO2 system. Don't skimp on the CO2 system as too much CO2 kills fish!
Inexpensive? To go high tech can be a few hundred dollars. A good planted tank light can be $150USD.
In any case, it's always good to get a stable low tech planted tank and then decide if you want to go high tech...as you can get a better light, then later add CO2 and more ferts. But still, I prefer fish friendly low tech.
Just my $.02.