[johnneilson]

IMHO, all 3 of these methods can be done successfully if done properly.
I have always been amazed with ability on a OA torch, like Gene Winfield, with a hammer and wet rag. Just amazing.
If you try MIG, use a small wire, solid with gas CO2, not flux core. (.016 or .020 wire)
The new TIG machines can make even me golden with ramp heat control, and stitching controls. Getting the setting right takes time, but worth it.
My preference would be MIG, most economical and relatively easy.
As with any job, having the proper tools and fixtures makes it easy.

John