Having used the newfangled kind it's real hard to recommend anything less...

I previously used an Imperial that was OK, and an imported OTC brand that was less than OK.
http://imperial-tools.com/content/93-fb-45%C2%B0-double-flaring-tools

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-