Hi Bart:
To me the most important part is understanding what is going on with a driver driven print, or LR and understanding that 360 is the correct number for larger prints, 720 smaller.
To be honest, if you take an average 60MP 3 part stitch or a 3 part D800 Stitch to 720, your file will be so huge in 16 bit mode, that to me it just becomes pointless to work with it. But yes I have tried pretty much every angle of Perfect resize I can think of, but for my work, I never to to 720, always at 360. I have plenty of ram, and processor, but these files just get huge. Not to mention, Perfect resize will take 10 minutes to process it out. I never have figured out what it's doing in all that time (besides making a person think "wow, it's sure taking a long time so the results should look great").
Most times, now my work is at 300 dpi, output from C1 or LR, and I will leave the image in that dpi throughout the work process, I then do the final output size in the LR print module to 360 ppi and let it do the final sharpening. I still will often use Focus Magic as an in between step or it with a combination of one of the photokit creative sharpening levels.
For me it's all about get to the final results with the least amount of steps, and after reading Jeff's book, and spending time with my printers, I feel you can see a difference in the LR prints. That plus I can still tweak an image with the LR develop toolset, which I often do. I have used LR for years, but only really started to print from it about 6 months ago, but only recently started outputting everything to 360. Plus the fact that LR has incorporated the Photokit sharpening routines, in both the Develop and print module is to a great asset, as I have always been a big fan of the Photokit plugin.
As to the print from the driver with finest detail checked, even Epson is a bit vague on this, as they imply you should only use it for images with text or wording. I have tried it and agree it makes a bit of difference to the positive but it can also add some strange artifacts. The other big issue can be with printing solid areas, skies, water etc, where when this option is checked the driver seems to want to add more detail, when tends to look like noise or something worse.
I am 100% windows, so the Mac print flow may be totally different with Epson and the print driver, I know they allow 16bit with Mac, not Win.
There is no "right" answer, but as Jeff stated, you have to find a method that works for you and learn it the best you can. On my larger prints, 40 x 60 and 36 x 72, this method is giving me some excellent results.
Paul