My LHBS left off my EKG portion of my recipe and I didn't realize it, until I was already down the road. It isn't convenient for me to head back there this weekend, so my option for what I have at home is to bitter with Columbus and do the rest with Willamette. I feel pretty good about the Willamette, but I am a little unsure about the Columbus. It would only be for bittering and I am looking to get about 30 IBUs out of it. Anyone with an opinion either way?