Two weeks into new Mac Pro ownership - loving it!
Thought I'd follow up with my Mac Pro honeymoon experience.
First, "thank you" to you folks who took the time to respond to my questions. Informed opinions are helpful in making a decision.
I bought the stock 2.8 GHz 8 core MP with 2 GB RAM, 8800 video, and 500 GB HD. Added 12 GB more RAM and 2 HD from Newegg.com. 2nd drive is a 750 GB and the 3rd is a 1 TB for backups/Time Machine. I installed VMware fusion and am running XP in a VM only (did not install Boot Camp). It was actually less problematic getting my peripherals installed in OS X than I expected. I have an Epson R1800 printer which, at first, printed crappily (is that a word?). I soon learned the default driver installed from OS X wasn't the correct one and a quick download from Epson's site and re-install fixed that problem. My old Epson 2450 flat bed scanner seems to work fine after downloading and installing OS X drivers. I did some research and found a workaround for installing my old Konica Minolta 2300DL color laser. This too works great. My Wacom graphics tablet, Pantone monitor calibrator, and memory card reader all are working as expected. I'm amazed at how easy it was to get everything working having never used a Mac previously.
Of course, the real measure of success is in the actual use of the machine. I've just finished processing my first wedding shoot with the new computer. I really didn't know quite what to expect with 8 cores. Watching Activity Monitor is actually a fun experience itself! From the outset this thing was fast! Transferring over 1700 RAW files (average 10 MB each) was several times faster than my old AMD X2 4400+ machine. Lightroom never glitched, nor did jumping between Lightroom and Photoshop every seriously tax the capacity of the machine. I was amazed to see no Page Outs with everything I was doing. With the old XP machine, I learned the hard way to not keep several things running at once while doing important work because sooner or later in a session, something was going to crap out on me. I'm sure fate will catch up with me at some point with the Mac, but so far it seems like there's no limits!
The user interface is taking some getting used to, but that will rectify itself soon enough. Still trying to master all the keyboard shortcuts. I don't really like the feel of the Apple mouse - may switch back to the Microsoft mouse from the old computer.
Guess you can count me in the group of happy switchers.