My next method was the fly line pin, which was a booger bear to insert into the end of the fly line. My Dad wouldn’t use anything but the pin. He liked the pin because it would run through the guides with ease; I would always get him to pin my fly line.
I eventually moved from the line pin to what I would call a combo connector, that Scientific Angler introduced which included the connector and the leader in one package. Scientific Angler had all the leader sizes from 7X to 3X. My only complaint was the hang up that resulted with the connector and tip guide. This leader connector combo has been discontented. I finally moved on to my next connector.
My next adventure with the connector was the loop that is manufactured by numerous companies. I have two complaints with this connector; one is the sinking of the loop after it becomes water logged. The other is the loop itself not being flexible enough to close. This connector can be very difficult to connect to your fly line. I tried this connector less than a year. The loop has a tendency to disconnect from the fly line.
My present connector is the fused leader loop into the fly line, which I consider the best I have found for me. I will never buy another fly line unless it has the loop built in the fly line. The loop is found in most fly lines priced above 40.00. Cabela has some line in the 30.00 range with the loop, if you don’t mind the bright orange color. The only color fly line I use is olive or green. What is you connector preference and why?