After reading all these In my opinion I'd say they are all good kits and ideas. Probably depends on how good a job is done assembling it. And the gauge by what you are using for. Most I see are 20 ga.
Just so long it is a good kit to begin with, or from a plank.
After doing a couple quality kits with no problems and great results I finally built one for myself from a cherry plank and a 24 Ga barrel and it is a great shooter, RB and shot. I liked them all, but really liked my own. It may not be quite as perfect but it is mine.