Slifer Express is located in the very busy Mountaintop Express #4 area and there are usually lots of people in this area.
Most of the time it's groomed and great.
This can get a little skied-off as the day progresses as so many people use this trail.
This is harder on a powder day or when it's not groomed as small moguls form and it's not the great cruiser that is can be.
Go here first in the morning when they groom this and you can get many laps on corduroy, especially if the lift is not busy.