IMO the ridged alum bender is best

there are cheaper ones that are the same also,the in the pic is a good one also

never kinked any I did with the bender,just bend it slow and steady,it will bend a 90* bend thats about 1.5" in the middle,thats a tight bend and used it on my fuel pump

I use the ready steel line that has 2 flare nuts and cut one end off