Excellent evaluation SCh5 , thanks for the insightful info .Forgot to note that one issue with Bluebirds/Concords is the
not-so-strict QC.It’s not unusual
to find duds and usually it’s not
just a blade or two ,but the whole pack of five. This,or...
I’m almost convinced by now that blades packaged into plastic containers are the ones than most often I’m going to find duds.Maybe the plastic packaging is not so forgiving to blade edges ,like paper is,when
it comes to handling & shipping the product .Bad for the environment ,too .