On MAC, results look crappy using Quartz.

They should look familiarly like Tk

Users of my tool are not computer savvy, and prefer a zip, unzip, ready to go tool

Not sure what that has to do with your choice of "Tk" flavor, since you're going to be distributing the zip for your users, just provide everything required, as cavapackager/citrusperl/PAR can help you provie

So, are you saying that Tcl::pTk is more similar to Perl/Tk than Tcl::Tk? I am still assessing options

Hehehe, Tcl::pTk is a "Tk.pm" interface to "Tcl::Tk" that is you change nothing in your Tk.pm code, just add one line (maybe two), and you get "Tcl::Tk" looks