Speaker recommendation for Rega Mira

My father has caught the audiophile bug and I'm trying to help him with speakers. He has a Rotel 970 CD player (modified), a Rega Mira integrated, Kimber Hero and 8tc cables. His room is an odd size with a good deal of open air. He listens to Blues, Jazz, and Vocals mostly and enjoys a large soundstage. He'll take detail over bass extension anytime. He is definitely staying under $5k and would prefer to spend a good deal less (under2k). Any recommendations for a good match with the Rega would be appreciated.