The butterfly screw clamp style is what I call the junk you typically find at the parts store. But I've never used one of that style that cost more than $20-$30, so maybe the more expensive ones work better.
I've had those that were made in USA and made in China, all junk. They're what you use when you have no other choice and you just need to get home.
I did see fairly recently that there is a Craftsman of that style which does appear to be much higher quality than any I've used and is still made in the USA. It was about $70. This was within the last year but the way Craftsman is going, it could be Chinese by now.
K-Tool International have a tool just like the Eastwood tool. That may help to find a better price for it.
Keep me posted on this because I am in the market for a flare tool that actually produces quality flares, comparable to those on the tubing you get at the parts store.
Lawrenceville, GA