Haven’t heard Tango, but the blue-label CineMag / Bob’s Devices Sky lineup is excellent. They’re on the warm / lush / fleshy (even slightly "bloomy") side of the tonal spectrum, but they’ll still be more detailed than lesser (cheaper) transformers like the CineMag red-label 3440A, Lundahl’s lower-end LL9206, etc. Pairs wonderfully with everything I’ve thrown at it -- Ortofon Cadenza Bronze, Koetsus of all stones & cantilevers, top Shelters, etc. Or course the Benz LPS doesn’t mate well to SUTs in general, but that’s not the Sky’s fault.
The Sky has a pleasing, musical sound that’s fun to listen to. It doesn’t have the laser-beam razor sharpness of some others (Lundahl LL1931 and LL1931Ag), but for me that can get in the way of music too. Adding a Sky in place of a SS headamp or MC stage can often alleviate problems with "anemic" sonic balance, yielding newfound weight and palpability to the music.
The Sky has a pleasing, musical sound that’s fun to listen to. It doesn’t have the laser-beam razor sharpness of some others (Lundahl LL1931 and LL1931Ag), but for me that can get in the way of music too. Adding a Sky in place of a SS headamp or MC stage can often alleviate problems with "anemic" sonic balance, yielding newfound weight and palpability to the music.