I'm nothing if not onomatopoeic, so rather than the usual star system, I give you my ratings:
Squee (4-5 stars): A happy, happy sound. Cross between a squeal and a whee.
Meh (2-3 stars): The middle ground, no real emotion anywhere.
Blarg (1 star/DNF): Taken from the Halo-based web series Red vs Blue. While the word was used for an entirely different purpose, I started using it as a way to describe anything overtly yucky. And it's stuck.
I may someday instill an ultrasquee for those that seriously blew my mind and/or an uberblarg for ones I had to stop myself from throwing across the room.
...but today is not that day.