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(Jeremy) writes:
I've been eyeing that jointer. Do you think that the spiral carbide
cutterhead is worth the extra $400?

Yes. Mostly because of the smoothness of the cutting process. On
wide pieces, instead of a really fast bang-bang-bang you get more of a
whoosh. Plus, sharpening a jointer knife is either (1) expensive or
(2) time consuming (sometimes both). Rotating or replacing a carbide
cutter is much faster.

Your best bet is to find someone in your area who has a spiral cutter
(on any jointer) and try it out.