I'm not sure where the yellow one came from (Betterbee or Brushy most likely), it was probably 10 years ago. I know the first good one I got came from Dadant, picked it up in High Springs, FL. When they first came out they were like $10-15, now you can get them for $5.
Here is an old picture of my wiring/embedding board. You can see how I use to wedge the bottom bar out to get the wire tight, but even that was a challenge. With these crimpers, you can take a super loose wire and tighten it right up.