I have a 6" Jet Jointer, and a 13" Dewalt 735 planer. Occasionally I have looked at prices to upgrade to spiral cutters, but its been a while. Either my perspective has changed, or there has been a general decrease in prices. True?

Also, when it comes to the 735, I've heard there are different choices that make installation harder or less difficult. I cannot recall where I read that.

Mike