Now that this thread has been resurected, my current floor pump is a Park PFP-4 refitted with the ridiculously expensive Hirame HP-20 pump head. The Park's OEM head works OK but this combination works better and more reliably than anything else I've ever used.

Here is one of the few sources for the Hirame: http://www.jitensha.com/eng/tires.html Scroll down for the Hirame listing.