Hardest 9+ on the Front Range?

Where's some good spankin' to be had? 

So far, Mail Ridge seem to stand out for me, but are there better ones out there? 

How'bout Vedauwoo? Penetration always gives me a good laugh.

By gully

The Umph Slot, Gorilla's Delight, and Cosmosis all come to mind as contenders- Although the Umph slot is only "5.8" and it looks like Cosmosis has been upgraded now  to 10a. 

By Gully is by far the hardest 5.9 in Colorado. Mail Ridge and Cosmosis are 5.6 if By Gully is 5.9. Umph Slot is harder than By Gully but it is 5.8. Figure that out!

Can't wait to get on umph slot!

I was literally thinking to myself penetration when I looked at the thread title. Hands down the hardest 9+ I can think of

Maybe not physically the hardest but definitely one of the more mentally challenging 9s I've climbed was hair city in eldo. 

By Gully for me as well.

By gully is probably the hardest 9. umph slot is harder, but only 8.

Green Spur p2 was pretty physical, I might've just had an off day though.

Hair City is definitely heady, but it's all there.

I haven't been on it yet, but I've read and been told that cardiac crack in the south platte is a worthy 9+

Maybe not front range but George’s Tree in Lumpy had me struggling pretty darn hard.