I purchased the MASTERCOOL hydraulic tool a while back to make double flare gas lines for a tri-carb set up. I can say, while expensive, it was worth the money. I was disappointed when I was done, I wanted to do more, it was so much fun! Perfect flares every time. For my brake lines (dual master cylinder - disc conversion) I used a combination of store bought lines and some customization using the tool. The Eastwood version looks to be very handy and of quality, I don't think it was available when I was looking for a tool.
don