I bought the pro tools 105 same as a jd2 but heard that pro tools makes better quality dies that last longer.
I went with 2in tube die, 240degree or what ever like $560 shipped from rock buggy supply. Next time ill just get the 180 degree cheeper die.
Pro tools also makes dies that fit the JD2(different then the die for the 105 so make sure you order the right one), buy the die from protools even if you bought the JD2 bender.
Its also critical to polish the flat die and clean you tube so it does not gull your tube and cause premature ageing to your die.
I did 120, 220, 300 then 600grit sanding and rubed it with polish, I also use a rattle can of litium grease on the flat die before evry bend,
Ive only bent 9 bends since I got it all set up last weekend but no gulling and it works good.