MO, the cost Intel are asking for the processors in the Mac Pro are unrealistic and makes the Mac Pro a very niche product that many don't need and probably why it must be difficult for Apple to continue offering it. The last great Mac Pro was the 2008 model with more recent models lacking important features (USB3, SATA3, Thunderbolt) but still costing the earth.
The latest iMac models, while not perfect are very capable machines, especially where photographers are concerned. With the addition on a secondary NEC or Eizo display I really don't see a need for the Pro any longer at these highly elevated prices. The idea of the tower computer is the upgrade ability but the Pro has never been great for that considering Apple usually drops support for older models every other refresh.
When I feel a need to upgrade my Mac Pro, I'll be taking a long hard look at the iMac with the best external display on offer at that time. IMO the display is more important than the computer when looking at Apples desktop and mobile offerings these days.
The service manager at the local Apple store agreed with you, and said the Mac Pro is overkill for just running Photoshop. He also recommended an iMac. The iMac has Thunderbolt. He recommended an iMac with the base level processor. For the price difference between the iMac and Mac Pro, I can buy the iMac and a new NEC monitor.
(1) NEC PA271W versus NEC MultiSync PA301W-BK. I assume both models are equally recommended, and the only difference is the slightly larger size in the case of the PA301?
The B&H web site states that the PA271 is an "LCD Flat Panel." Is that an IPS LCD? However, the PA301 is an "IPS (CCFL Backlight)." Do these two use the same technology or not? If there is a difference, which do you experts recommend?
(2) I currently have an older NEC 3090WQXi. Am I correct in my assumption that this older model probably uses a bulb of some sort, whereas the PA301 is a newer IPS LCD. Similar technology, albeit better, than the Apple display?
(3) Do any of you have any opinions about which software to run to also operate windows if I go that route? VM Fusion versus Parallels?