I went to a college on the quarter system, and I liked the pace of quarters. The only drawback was that not all classes offer the course maximum credit. For example, there might be 5 credit classes or 3 credit classes. It was definitely harder taking 4 classes a quarter because the 3 credit classes are just as hard as the 5 credit classes.
My son looked at Carleton. If I recall, all of their courses are maximum credit and the standard workload is 3 classes per term.
Our high school has sent a few kids to Colorado College. The feedback about the Block Plan is you either love it or you hate it. There is no in between.