I'm reviewing the new double flaring tool by Lisle, part number 33250. I prefer the Lisle tool over the Harbor Freight one, because the design is fool proof. The screw-in dies are unbreakable and the depth gauge bolt assures correct flaring length every time.

But then, the Lisle tool is one of many on the market that have the vice style flaring mechanism and the low profile design. I chose the Lisle, despite the higher cost, because it flares both 3/16" and 1/4" tubing. For DIYers I would recommend any low-profile, vice style double flare tool on the market, not just the Lisle brand. They're all great.