Beehive vs. Standard spring pressures?

TrailBeast said
As far as I know beehives serve two purposes only.
1. They can give more clearance for retainer to rocker.
2. They prevent spring vibration harmonics.

As far as I know they are just like any other spring a person would select by open and closed pressures.

3. there lighter than standerd springs, help valve train weight on valve side of rocker arm! doesn't build up as much heat ether...