I've always bought True Flight full length feathers and chopped them myself, because I've always been perfectly happy with them and see no reason to change. Using full length feathers, I'm sure I've chopped more than a thousand feathers in all different colors. I've never rejected a single feather. Some I've had to search for the best place to chop, but I've always ended up with a chopped feather that looks perfect to me. (I use a Vario Clipper, which does produce good chops).
Once I had a chance to buy a lot of AMG seconds at a discounted price that were chopped to 5". The only thing I use 5" feathers for are my flu-flus, where I mount 6 feathers on one end and a judo on the other, for stump shooting. They get torn up pretty quickly, so I thought seconds would be fine. Frankly, I couldn't tell why they were seconds. I would look at one and think, "this looks fine to me." So I guess I must be a poor judge of feathers. Fortunately, I am a better judge of women (in case my wife ever reads this!).