Macro lens or extension tubes for Pentax?

[tnabbott]

I like the SMC 67 Macro 1:4 100mm with life size converter.

[jcc]

I use a macro lens for "normal" close-up, a reversing ring or bellows/extension (usually on a 35mm or 50mm lens) for "closer" macro work, and a combination of a reversed lens with extension for "ultra" macro work.