I agree with Randy's videos, I have his most recent, a mainly howling video, I believe he did it really to prove that howling is very effective. Fantastic, great, intelligent, and all sorts of other positive adjectives. I thought it was a great video, and I love that he hand calls, none of this press play and wait BS.
The responses he gets, the dogs they kill, it would be hard to argue against the calls. I agree with liking open reed calls more, I just happened upon that little closed reed call, liked the sound, liked that it was versatile and had to get it.
The open reed calls are generally a more versatile call, able to get a bigger range of sounds, which means less calls hanging around your neck.