Listened to the audiobook of Bonk, and though I liked Sandra Burr for the Clan of the Cave Bear series, I didn't love her for this. She did a fine job, I just think perhaps someone with a little more comedy could have made this book better for me.
Gulp (IMHO) was hilarious and well planned, with a progression that was perfect in every way. Bonk, however, felt like it was jumping all over the place for me. Somehow I hadn't usually minded the footnotes on audio for Gulp but the footnotes in Bonk were annoying and jarring.
I would like to think of myself as quite comfortable with anatomical terms and especially words that are sex-related, but I think there was a bit of... giddiness? nervous tittering? furtiveness? which accompanied this book for me that for the prolonged periods of listening to the cds started to wear on me.
Overall, I think it was well researched, for the amount of research that there is, and I admire Roach's willingness to ask the nitty-gritty questions that everyone is wondering. Along these lines, I felt that her descriptions of her own participation in multiple studies, while providing a great deal of detail and often some comedy, more often made me squirm in my seat. It felt like someone graphically describing their medical history--can't turn away though you desperately want to.