Thinking about getting Kaylor Collars for the birds...What do you think?

[lwis]

I have one xsmall Aviator harness, but the head hole is simply too small for Darwin, and Dexter has a bigger head so it wouldn't work for him either. Do you guy think the Kaylor Collar would be comparable to the Aviator? I have heard the head holes are slightly larger and easier to get on. I also emailed them and they said they guarantee the fit of the head hole size, and they will send me a new one if it doesn't fit.
I have heard people have concerns about it having a detachable leash, but our conures aren't huge chewers, in that they don't really take things apart. I would love to get them both harnesses soon so that we can resume training in hopes that we can get outside once summer hits.