I just bought a Gul Pro harness (non nappy) at the end of the season so I only got to use it once or twice. It has a built in spreader bar so there is no additional expense there unless you get the keyhole system. It is easy to adjust and reasonably comfortable (relative to the butt bucket I was using before). The lumbar support is made of foam, which is to say, not much support at all. I guess that is a trade off. A stiff back support would be awful any time you are not out on the wire.