I, too, change the channel when Lynn Spence comes on. The way she talks in run-on sentences doesn't sit right with me. "Look at how absolutely wonderful this is, and this and this. AND look at this wonderful thing that I brought in to show you, and don't you love this?" However, I've heard a lot of people say that they enjoy her; so I just chalk it up to fact that not everybody can like the same thing. If nothing else, Lynn Spence is very enthusiastic.
I do very much enjoy Ramsin, but I suspect he's got the type of personality that doesn't make him feel as though he needs to be the center of attention. Last week, I noticed that Brian Gluckstein (who I also enjoy) interupted him a number of times, and Ramsin just stepped back and let Brian talk. While I wish that Ramsin would be the focus of the show little more often, I suspect this part of his personality is why we all seem to like him so much.