Columbus Hops and harshness

[DownHillonWater]

Lately I've been using Columbus quite often as my bittering hops. I've also read some on this forum and others about it being "harsh". What does this mean? I need to resupply soon...what bittering hops is recommended instead?

 

[DownHillonWater]

Sorry that I accidentally put this on the wrong thread. I'll repost in recipes and ingredients.