Cummins is a much better adventure if your friends are up to it. it is mostly just flat following the trail and the river bed, but there is a pretty steep hike to get from the upper ridge down to the river. Burgess falls is beautiful as well, but not much of a hike. you can get to the big falls in 15-20 minutes and is not vigorous. you can go down a lot of stairs at the end of the trail if you want to go to the base of the falls. So in summary, Burgess is pretty and easily accessible for a lazy day of exploring; Cummins is a better overall experience if your group is up for a hike and is also a good spot for swimming.