Im looking to retire my desktop dinosaur: 2007 iMac, 2.4 GHz Intel Core2 Duo, 4 GB 667 DDR2 DRAM, graphics: HD 2600 Pro 256MB... I have a macbook pro that is fast and up for the tasks of PP when on the road. It is a night and day comparison and the desktop has been "chugging" and "sluggish" at such a slower pace, the retirement is a done deal. The system is outdated and with big programs such as PS and LR and anything else opened, trouble ensues... I'm ready to buy, but don't know what to get.
Now, what do you Mac users recommend for a desktop: the latest iMac w retina display, or a mac mini and select monitor? There is always the back-up system to consider as well, but I would prefer to concentrate on the desktop and monitor for now.
thanks for your suggestions.

Ann