While lugs have a romantic timeless beauty,
nice welds have a technical sense of minimalist purity.
I have been TIG welding for 25 years and brazing for 30, and
without a doubt, TIG is a more demanding task. TIG welding light
gauge steel tubing requires subtle control, unwavering focus,
and a certain degree of natural ability.
If you want to learn more please read the Wikipedia description of TIG welding.