the Swagelok/ rigid/ imperial eastman single size benders are the best overall. They are available as mentioned from several sources and the bay is a good place to find a used one. The one size fit's all Eastwood benders are junk IMO, they work but very limited. However the other "plier" style in the are handy for getting real close to the fitting. they also are available from multiple sources. Note there are newer versions of the pictured lever bender that offer a slight advantage when making S bends