Having owned both the Jolida and NAD and going by your music choices I recommend the NAD. I don't know much about KEF speakers. The Jolida is only 10 watts and would probably be fine at low volumes. However, once you turn it up, the bass response on the Jolida will be extremely flubby and or lacking. Electronic music tends to be bass heavy. The NAD is a very good top to bottom amp. What the Jolida adds is texturing and some additional warmth to the music. The NAD is neutral, if a little cool sounding.
