I think its a very individual thing. Same as one college professor can be a favorite to some students and a bane to others.
Theres one fellow (I won't mention any names) who's voice just drove me crazy. He just droned on and on in a very flat tone of voice. Others are so busy trying to sell you something the message is completely lost.
I like learning as much as I can from as many sources as I can. If it works it can't be wrong