i have an old heavy duty cast iron harbor freight jointer that i cannot find blades for. its a 6 inch jointer and it works very well. blades are a real PITA to set because i dont have the proper tools or pkow how. so what i want to know is, should i buy the dispoz-a-blade kit for it for $239 from EstaUSA or buy the $500 jointer from grizzly. it has a 46 inch table and its also a 6 inch. what do you think? any experiences with the dispoz-a-blade system?