A lot of people say to utilize Destroyer books because they teach you what you need for the bio section. Dr. Romano tailored the Destroyer notes for the Destroyer bio section, so I'd assume his notes are very good at teaching what you need. I've also read a few chapters and they read like he's talking to you. I looked at the new Bootcamp notes the other day, and they seem very choppy like powerpoint slides, and I personally don't like trying to figure out how the concepts connect in that way. I'm sure they're sufficient for the DAT, I just don't like the style they're written in. Also, Dr. Romano has been prepping students well for the DAT for decades, whereas a lot of the BC team are dental students who only made BC I believe 5ish years ago. Not that there's anything wrong with that because many people still do well with Bootcamp. My personal preference is to just be taught by someone who's been doing it for a while. However, you should figure out how you learn best. Maybe skim the first few chapters of each.