i am leaning to buy a jointer but there is so many reviews on them its hard to decide,,i was leaning to the benchtop type,,but for not much more you can get the ridgid one,,, even the grizzly that's not too bad in price,,im just a retired woodworker so an advice you can give me would be greatly appreciated,,and which do you thing would be the easiest to change knives,,the one with straight blades or the helical inserts,,,,thank you