I've used Macromedia's Sound Edit for years but I prepare everything into Sound Studio, a very cool free one. Doesn't seem to be available for Windows though. Anyways there are a few free ones so I guess you'll find one you like.
What didn't you like about Audacity??? I use it for some stuff, it's got some fun options others don't have which I like...
But NOTHING will ever beat that old school 1998 Sound Edit, NOTHING!!!