Authored Apple dealer B&H Photo loaned MPG the Apple 15.4" MacBook Pro Retina (Mid 2015), 2.8GHz / Radeon R9 M370X / 16GB / 1TB. This top-end configuration is recommended for power users, photographers, videographers, etc. B&H Photo has a low price on AppleCare.
Photoshop and Lightroom users take note of the awesome SSD performance in the 2015 MacBook Pro, which translates into big gains in the Real World of taxing computer tasks.
Of course most computing will not see such gains. But the SSD performance greatly extends the envelope for anything that is I/O intensive and/or exceeds the maximum 16GB memory.