I just posted a post (!) but it didn't work. Am having a few probs with MN tonight.
Anyway what I said was authors and poets reading their own works are the best imo. The South Bank Centre (can't remember which bit) used to provide recordings but I've no idea if this is still the case.
As for Juliet Stevenson, she's great on a Book at Bedtime - sends me straight to sleep which is why I like her! Also Mark Tully has a good voice.