I have owned the Temptations and remember them as an exceptionally satisfing experience. However, I was not pleased with them unless they had big tubes amps to drive them. We listened to them with EL 34's and 6c35's, but in my opinion are a great match for 6550 based tube amps.
With this combination, they excelled at every aspect of the frequency spectrum, exhibiting punchy defined bass, and dynamic contrasts without losing micro detail or high frequency extention.
I sold them last fall to try the newest Kharma 1DDE's, which arrived this month and are going through a break in
phase, so any comparison at this time is premature.
You can't go wrong with a well set up Temptation system.
I never had the pleasure of owning the Masters.