Precision vs general-purpose ACME hardware question

I'm looking to purchase a lead screw for the printer I'm putting together, and want better quality than can be achieved through plain threaded rod. What I'm thinking right now is a McMaster-Carr precision ACME screw (McMaster# 98940A305) with a general-purpose acme hex nut or two (# 95155A114).

However, McMaster recommends their expensive precision acme nuts to go along with the precision rod. Can I get by with the simple hex nut, or will thread fit be poor enough to cause binding and other unwanted effects? Will the imprecision of the general-purpose nut negate the additional expense of the precision rod?

Get a delrin nut off ebay.

A badly-made steel nut will damage the shaft, and a well-made metal nut will cost several arms and legs. Plastic is cheap but precise.

I don't think there's much point in going to the extra expense of a precision ground screw unless you get a matching nut. That said, I don't think the Z axis requires a precision ground screw/nut. It is normally moving in relatively large steps as opposed to motion in the X and Y axes where you would want the precision/accuracy to be very high.

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Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]