+2 Sugden A21SE. But then I do not know your endgame. It's an overwhelming performer for Advent speakers, probably sold that model of Advent in the day. Great performers.....for the day. Any receiver would drive them and be musical.
The Sugden opens the door to a myriad of quality loudspeakers as it will drive most anything with aplomb. I still own the older version and know its sound and capabilities. I've run it with a JL subwoofer and Merlins. It is so immediate with reproduction. Versatile, F1 quick and nimble. Have fun. Cheers