What sort of books do you like OP?
If you like light hearted, bit daft, and a fun narrator the Agatha Raisin series are good, with Penelope Kieth narrating.
If you like Gothic horror or sci-fi the BBC radio dramas are good.
If you like the supernatural and suspense the secrets of Cricklley Hall by James Herbert read by David Rintoul is good, and the woman in black by Susan Hill, can't remember the narrator.
If supernatural detective stories is more your thing the Detective McLean series by James Oswald are okay...not realistic, but if you don't mind that they are enjoyable.
I really like David Jackson, 'the resident' was my favourite the bad guy has an incredibly likeable streak (I think that's why I like Jackson's books because his characters are often complex, and you kinda feel sympathy for some of the 'baddies'! Some of his books have quite an interesting moral dilemma which if you like that sort of thing the 'the rule' is brilliantly read, and really quite thought provoking.
I love Joanna Lumley's voice, find her very soothing, really enjoyed her reading of Pride and Prejudice.
If I want light relief and a giggle the "The One Hundred Year Old Man who climbed out the window and disappeared" read by Peter Kenny is brilliantly entertaining, and I enjoyed the 'why mummy..." book series can't remember the narrator but she's brilliant!