So far I am loving Iris for the Radius option - this makes it a very basic but powerful sampler even if it eats the CPU like mad. I could even resample the sound out of it and not worry about the CPU, I think for this use it is excellent!
I do like the spectral editing, but you don't have to do anything with it, just plunk in a sample and set it to Radius and off you go!
For those who don't know, Radius is a very high-quality pitch changing algorithm that time-stretches the sample as well as tunes it, so sounds playback at the same speed up and down the keyboard which I find essential!
It would be nice if you could multi-sample or internally resample, but I bet that could come in an upgrade version.