USABO VS RSI

I’m interested in doing summer programs next year but I don’t know if I should decide between biology Olympiad or Research Science Institute. I have a passion for biology and research you might have guess since I included those programs in this. Anyways, they both seem like a really good fit for me but I’m torn between the two. If I could I would go to them both (in different years of course) but I heard that if you sign with Olympiad you can’t do any other programs. Does it mean for the rest of the summer or all through out high school? And if it is all through out high school, then which one would you decide to be a little more better? To be honest since I love them both so much and I can’t decide, I am looking at which one ranks higher to make my decision. Thank you and goodbye

Also I am deciding it on the kind of qualities they have too. Could you guys give me a pro con list on the both of them