ORIGINAL: aussiesteve
Jigs - A lot but they are probably not as complex as you may expect (The reason that some brands get poor reviews) - they consist largely of a flat bench , basic positioning blocks a drawing and some fast setting glue (Hot glu or CA in many cases).
Many here complain on the quality of many Arfs. Many that I have look like they went the "CA glue" route but I always beef things up when I get the plane. Even with the changes i routinely make, they are still saving me alot of building time.
If you build any arf "as is" and make no improvements and a gear rips out or the firewall cracks etc, you cannot blame the chinese for poor quality but blame your self for not checking it out